Updated on 2026/04/01

写真a

 
KODA AKIHIRO
 
Organization
Institute of Integrated Research MDX Research Center for Element Strategy Visiting Professor
Title
Visiting Professor
External link

Research Interests

  • 強相関電子系

  • J-PARC

  • ミューエスアール法

  • ミュオン

  • 金属絶縁体転移

  • GM冷凍機

  • 超伝導電磁石

  • 超低速ミュオン

  • ナイトシフト

  • 銅酸化物超伝導

  • 高圧物性

  • コバルト酸化物

  • 超臨界金属

  • 核四重極共鳴

  • NMR、μSR

  • 電場勾配

  • 超伝導

  • 水素原子

  • 水和物コバルト超伝導

  • 核磁気共鳴(NMR)

Research Areas

  • Nanotechnology/Materials / Applied condensed matter physics

  • Energy Engineering / Quantum beam science

Research History

  • 大学共同利用機関法人高エネルギー加速器研究機構   物質構造科学研究所   その他

    2011 - 2013

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Professional Memberships

Papers

  • Muon Species in Frozen D2O Observed with Zero-field Muon Spin Precession

    Amba Datt Pant, Akihiro Koda, Burkhard Geil, Katsuhiko Ishida, Roshan Pudasaini, Kazuaki Kuwahata, Masanori Tachikawa, Stephen P. Cottrell, Jumpei G. Nakamura, Shoichiro Nishimura, Koichiro Shimomura

    Journal of the Physical Society of Japan   2026.1

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.7566/JPSJ.95.014603

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  • Frustrated random-singlet state with ice-type structural fluctuation in spinel titanates

    Noriaki Hanasaki, Takayuki Hattori, Takumi Komoda, Kouei Minamoto, Shuhei Torigoe, Satoshi Yamashita, Yasuhiro Nakazawa, Takehiko Nakano, Kouhei Yoshimi, Mitsuharu Yashima, Hidekazu Mukuda, Utami Widyaiswari, Isao Watanabe, Akihiro Koda, Takashi Honda, Toshiya Otomo, Hajime Sagayama, Katsuaki Kodama, Hiroshi Murakawa, Hideaki Sakai

    Proceedings of the National Academy of Sciences   123 ( 1 )   2025.12

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    Publishing type:Research paper (scientific journal)   Publisher:Proceedings of the National Academy of Sciences  

    In ice, it is well known that the orientation of H 2 O molecules is disordered by geometrical frustration. Ice-analogous materials having a pyrochlore lattice display interesting phenomena such as the spin-ice state and the magnetic monopole. In the spinel titanate MgTi 2 O 4 , the Ti ions have a quantum spin in the pyrochlore lattice. The Ti ions are displaced, accompanied by the spin-singlet formation. Since this displacement pattern follows the ice rule, the title compound is a material analogous to ice. When a small quantity of Ti ions are replaced with Mg ions, the ice-type structural fluctuation exists. In this structural ice-type state, the spins are also fluctuating at a nanosecond scale down to 0.3 K. We ascribed this phenomenon to the gapless frustrated random-singlet state, in which the spin-singlet pairs are resonating, and the orphan spins are hopping.

    DOI: 10.1073/pnas.2517926123

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  • Phonon assisted ion diffusion in electrochemically cycled Na <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si27.svg" display="inline" id="d1e784"> <mml:msub> <mml:mrow/> <mml:mrow> <mml:mi>x</mml:mi> </mml:mrow> </mml:msub> </mml:math> CoO <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si28.svg" display="inline" id="d1e792"> <mml:msub> <mml:mrow/> <mml:mrow> <mml:mn>2</mml:mn> </mml:mrow> </mml:msub> </mml:math>

    Ola Kenji Forslund, Rasmus Palm, Elisabetta Nocerino, Izumi Umegaki, Anton Zubayer, Akihiro Koda, Elodie Guerin, Claude Delmas, Yasmine Sassa, Jun Sugiyama, Martin Månsson

    Materials Today Energy   54   102072 - 102072   2025.12

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.mtener.2025.102072

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  • Chemically tunable quantum magnetism on the anisotropic triangular lattice in rhenium oxyhalides

    Masaki Gen, Daigorou Hirai, Katsuhiro Morita, Kazuhiro Nawa, Satoshi Kogane, Naofumi Matsuyama, Takeshi Yajima, Mitsuaki Kawamura, Kazuhiko Deguchi, Akihiro Koda, Maiko Kofu, Seiko Ohira-Kawamura, Taku J. Sato, Akira Matsuo, Koichi Kindo, Yoshimitsu Kohama, Zenji Hiroi

    Nature Communications   16 ( 1 )   2025.11

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1038/s41467-025-65913-7

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    Other Link: https://www.nature.com/articles/s41467-025-65913-7

  • Superlong‐Range Magnetic Coupling and Ferromagnetic Spin Freezing in Mechanoluminescent Semiconductor Eu:SrAl2O4

    Xu‐Guang Zheng, Ichihiro Yamauchi, Tomasz Galica, Eiji Nishibori, Tatsuya Kawae, Jumpei G. Nakamura, Akihiro Koda, Chao‐Nan Xu

    Advanced Science   2025.10

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/advs.202509474

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  • Molecular dynamics of cis -polybutadiene across the glass transition revealed by muonated-radical spin relaxation

    S. Takeshita, H. Okabe, M. Hiraishi, K. M. Kojima, A. Koda, H. Seto, T. Masui, N. Wakabayashi, F. L. Pratt, R. Kadono

    Physical Review B   2025.6

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/lzc5-7n6x

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  • Deciphering Transition Metal Diffusion in Anode Battery Materials: A Study on Nb Diffusion in NbxTi1−xO2

    Ola Kenji Forslund, Carmen Cavallo, Johan Cedervall, Jun Sugiyama, Kazuki Ohishi, Akihiro Koda, Alessandro Latini, Aleksandar Matic, Martin Månsson, Yasmine Sassa

    Carbon Energy   7 ( 8 )   2025.6

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    Publishing type:Research paper (scientific journal)   Publisher:Wiley  

    ABSTRACT

    Demand for fast‐charging lithium‐ion batteries (LIBs) has escalated incredibly in the past few years. A conventional method to improve the performance is to chemically partly substitute the transition metal with another to increase its conductivity. In this study, we have chosen to investigate the lithium diffusion in doped anatase (TiO2) anodes for high‐rate LIBs. Substitutional doping of TiO2 with the pentavalent Nb has previously been shown to increase the high‐rate performances of this anode material dramatically. Despite the conventional belief, we explicitly show that Nb is mobile and diffusing at room temperature, and different diffusion mechanisms are discussed. Diffusing Nb in TiO2 has staggering implications concerning most chemically substituted LIBs and their performance. While the only mobile ion is typically asserted to be Li, this study clearly shows that the transition metals are also diffusing, together with the Li. This implies that a method that can hinder the diffusion of transition metals will increase the performance of our current LIBs even further.

    DOI: 10.1002/cey2.70017

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  • Spontaneous magnetic field and disorder effects in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>BaPtAs</mml:mi><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi>Sb</mml:mi><mml:mi>x</mml:mi></mml:msub></mml:mrow></mml:math> with a honeycomb network

    Tadashi Adachi, Taiki Ogawa, Yota Komiyama, Takuya Sumura, Yuki Saito-Tsuboi, Takaaki Takeuchi, Kohei Mano, Kaoru Manabe, Koki Kawabata, Tsuyoshi Imazu, Akihiro Koda, Wataru Higemoto, Hirotaka Okabe, Jumpei G. Nakamura, Takashi U. Ito, Ryosuke Kadono, Christopher Baines, Isao Watanabe, Takanori Kida, Masayuki Hagiwara, Yoshiki Imai, Jun Goryo, Minoru Nohara, Kazutaka Kudo

    Physical Review B   111 ( 10 )   2025.3

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    Publishing type:Research paper (scientific journal)   Publisher:American Physical Society (APS)  

    DOI: 10.1103/physrevb.111.l100508

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    Other Link: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevB.111.L100508/fulltext

  • Erratum: “Ambipolarity of diluted hydrogen in wide-gap oxides revealed by Muon study” [J. Appl. Phys. 132, 105701 (2022)] Reviewed

    M. Hiraishi, H. Okabe, A. Koda, R. Kadono, H. Hosono

    Journal of Applied Physics   132 ( 10 )   105701 - 105701   2025.1

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:{AIP} Publishing  

    <jats:p> Muon spin rotation has long been recognized as one of the few methods for experimentally accessing the electronic state of dilute hydrogen (H) in semiconductors and dielectrics, where muon behaves as a pseudo-H (designated by the elemental symbol Mu). Meanwhile, predictions on the electronic state of H in these materials by density functional theory (DFT) do not always agree with the observed states of Mu. Most notably, Mu frequently occurs in wide-gap oxides simultaneously in a neutral ([Formula: see text]) and a diamagnetic state ([Formula: see text] or [Formula: see text]), which DFT calculations do not explain; they predict that H is stable only in a diamagnetic state with the polarity determined by the equilibrium charge-transition level ([Formula: see text]) vs the Fermi level. To address this issue, we developed a semi-quantitative model that allows a systematic understanding of the electronic states reported for Mu in the majority of oxides. Our model assumes that muons interact with self-induced excitons to produce relaxed-excited states corresponding to donor-like ([Formula: see text]) and/or acceptor-like ([Formula: see text]) states and that these states correspond to the non-equilibrium electronic level ([Formula: see text] or [Formula: see text]) predicted by DFT calculations for H. The known experimental results are then explained by the relative position of [Formula: see text] and [Formula: see text] in the host’s energy band structure. In addition, the model sheds new light on the polaron-like nature of the electronic states associated with shallow donor Mu complexes. </jats:p>

    DOI: 10.1063/5.0253759

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  • Correlation between ferroelectricity and torsional motion of acetyl groups in tris(4-acetylphenyl)amine observed by muon spin relaxation

    J. G. Nakamura, M. Hiraishi, H. Okabe, A. Koda, R. Kumai, F. L. Pratt, R. Kadono

    Journal of Applied Physics   2025.1

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/5.0247652

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  • Revisiting the ion dynamics in Li x CoO 2 and Na x CoO 2

    Ryoichi Tatara, Daisuke Igarashi, Masanobu Nakayama, Tomooki Hosaka, Kazuki Ohishi, Izumi Umegaki, Jumpei G. Nakamura, Akihiro Koda, Hiroto Ohta, Rasmus Palm, Martin Månsson, Eun Jeong Kim, Kei Kubota, Jun Sugiyama, Shinichi Komaba

    Chemical Science   16 ( 42 )   19990 - 20001   2025

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    Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry (RSC)  

    By combining operando muon spin spectroscopy and molecular dynamics simulations, this study reveals how ion size, electrostatic interactions, and crystal structure influence self-diffusion in layered Li x CoO 2 and Na x CoO 2 .

    DOI: 10.1039/d5sc03394b

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  • Field-Induced Criticality in YbCu4Au

    Takanori Taniguchi, Kotaro Osato, Hirotaka Okabe, Takafumi Kitazawa, Masahiro Kawamata, Shota Hashimoto, Yoichi Ikeda, Yusuke Nambu, Dita Puspita Sari, Isao Watanabe, Jumpei G. Nakamura, Akihiro Koda, Jun Gouchi, Yoshiya Uwatoko, Shunichiro Kittaka, Toshiro Sakakibara, Masaichiro Mizumaki, Naomi Kawamura, Takayoshi Yamanaka, Koichi Hiraki, Takahiko Sasaki, Masaki Fujita

    Journal of the Physical Society of Japan   93 ( 12 )   2024.12

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    Publishing type:Research paper (scientific journal)   Publisher:Physical Society of Japan  

    DOI: 10.7566/jpsj.93.124706

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  • Quasistatic magnetism in the breathing pyrochlore antiferromagnets LiGa1−xInxCr4O8 ( x = 0.2, 0.5)

    W. Lee, S. Yoon, Y.-S. Choi, S.-H. Do, A. N. Ponomaryov, S. A. Zvyagin, D. Gorbunov, J. Wosnitza, A. Koda, W.-T. Chen, K.-Y. Choi, S. Lee

    Physical Review B   2024.10

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevB.110.144435

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  • Formation and structure of MuOH in ice studied by muon spin rotation

    Amba Datt Pant, Akihiro Koda, Burkhard Geil, Katsuhiko Ishida, Rajendra Adhikari, Kazuaki Kuwahata, Masanori Tachikawa, Koichiro Shimomura

    Physical Review B   2024.9

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevB.110.104104

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  • Fermi liquid state in 𝑇*-type La1−𝑥/2⁢Eu1−𝑥/2⁢Sr𝑥⁢CuO4 revealed via element substitution effects on magnetism Reviewed

    Takanori Taniguchi, Kota Kudo, Shun Asano, Motofumi Takahama, Isao Watanabe, Akihiro Koda, Masaki Fujita

    Physical Review B   110 ( 8 )   2024.8

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    Publishing type:Research paper (scientific journal)   Publisher:American Physical Society (APS)  

    DOI: 10.1103/physrevb.110.085116

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    Other Link: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevB.110.085116/fulltext

  • Slow polymer dynamics in poly(3-hexylthiophene) probed by muon spin relaxation

    S. Takeshita, K. Hori, M. Hiraishi, H. Okabe, A. Koda, D. Kawaguchi, K. Tanaka, R. Kadono

    Journal of Applied Physics   136 ( 3 )   2024.7

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    Publishing type:Research paper (scientific journal)   Publisher:AIP Publishing  

    The molecular dynamics of regioregulated poly(3-hexylthiophene) P3HT is investigated using muon spin relaxation (μSR). The response of the μSR spectra to a longitudinal magnetic field (BLF, parallel to the initial muon spin direction) indicates that the implanted muons form both muonated radicals localized on the thiophene ring and diamagnetic states with comparable yields. Moreover, the unpaired electron in the radical undergoes hyperfine interactions with muon bound to thiophene and with neighboring protons, whose fluctuations can serve as a measure of the molecular dynamics. The BLF dependence of the longitudinal muon spin relaxation rate (1/T1μ) measured in detail at several temperatures is found to be well reproduced by the spectral density function J(ω) derived from the local susceptibility that incorporates the Havriliak–Negami (H–N) function used in the analysis of dielectric relaxation, χ(ω)∝1/[1−i(ω/ν~)δ]γ (where ν~ is the mean fluctuation rate and 0&amp;lt;γ,δ≤1). The magnitude of ν~ and its temperature dependence deduced from the analysis of 1/T1μ are found to be consistent with the motion of hexyl chains and thiophene rings suggested by 13C-NMR. The present result marks a methodological milestone in the application of μSR to the dynamics of complex systems with coexisting fluctuations over a wide range of time scales, such as polymers.

    DOI: 10.1063/5.0220611

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  • Nonmagnetic Ground State in RuO2 Revealed by Muon Spin Rotation

    M. Hiraishi, H. Okabe, A. Koda, R. Kadono, T. Muroi, D. Hirai, Z. Hiroi

    Physical Review Letters   2024.4

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevLett.132.166702

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  • Annealing and doping effects on magnetism for T$$^{*}$$-type (La, Eu, Sr)$$_2$$CuO$$_{4-y}$$F$$_y$$ cuprates

    Peiao Xie, Motofumi Takahama, Takanori Taniguchi, Hirotaka Okabe, Akihiro Koda, Isao Watanabe, Masaki Fujita

    Interactions   245 ( 1 )   2024.4

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    Abstract

    The magnetic behavior of T$$^{*}$$-phase cuprates in the underdoped region has been studied through zero-field muon spin rotation/relaxation ($$\mu $$SR) measurements. By examining the manner in which the superconducting transition temperature changes with increased fluorine substitution, we demonstrate the possibility of achieving an underdoped region in T$$^{*}$$-La$$_{1-x/2}$$Eu$$_{1-x/2}$$Sr$$_{x}$$CuO$$_{4-y}$$F$$_{y}$$ (LESCOF). For as-grown (AS) samples, the onset temperature for development of spin correlation is determined by $$\mu $$SR measurement. We observed a substantial enhancement from $$\sim $$ 7 K (x = 0.18, y = 0) to $$\sim $$ 80 K (x = 0.18, y = 0.15) with an appearance of a magnetic order below $$\sim $$ 55 K. Thus, the magnetic order can be stabilized by underdoping in AS T$$^{*}$$-LESCOF, similar to T-phase La$$_{2-x}$$Sr$$_x$$CuO$$_4$$. However, the damping of spin precession in the $$\mu $$SR time spectra appears to be significant than in La$$_2$$CuO$$_4$$ (LCO), suggesting the presence of inhomogeneous magnetism. In addition, the unrecovered normalized time spectrum to 1/3 along the time axis indicates a dynamical nature of magnetism. These magnetic behavior disappears with oxidation annealing, even in the lightly hole-doped sample. The absence of static magnetism in the oxidation-annealed T$$^{*}$$-LESCOF could be attributed to the structural effect, as the physical properties of the T$$^{\prime }$$-phase cuprates has been discussed in terms of oxygen coordination around the Cu ion.

    DOI: 10.1007/s10751-024-01904-2

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    Other Link: https://link.springer.com/article/10.1007/s10751-024-01904-2/fulltext.html

  • Negative muon beam status at the D-line of MUSE, J-PARC

    Soshi Takeshita, Izumi Umegaki, Motonobu Tampo, Patrick Strasser, Yutaka Ikedo, Akihiro Koda, Wataru Higemoto, Takahiro Yuasa, Naritoshi Kawamura, Yasuhiro Miyake, Koichiro Shimomura

    Interactions   245 ( 1 )   2024.3

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1007/s10751-024-01877-2

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    Other Link: https://link.springer.com/article/10.1007/s10751-024-01877-2/fulltext.html

  • Sample Environment for Low Temperature μSR Experiments at MLF, J-PARC

    Jumpei G. Nakamura, Akihiro Koda, Hua Li, Masatoshi Hiraishi, Hirotaka Okabe, Shoichiro Nishimura, Ryosuke Kadono

    Proceedings of 11th International Workshop on Sample Environment at Scattering Facilities (ISSE Workshop Nasu 2022)   2024.3

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    Publishing type:Research paper (international conference proceedings)   Publisher:Journal of the Physical Society of Japan  

    DOI: 10.7566/jpscp.41.011007

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  • Muon spin relaxation in mixed perovskite (LaAlO$$_3$$)$$_{x}$$(SrAl$$_{0.5}$$Ta$$_{0.5}$$O$$_3$$)$$_{1-x}$$ with $$x\simeq 0.3$$

    Takashi U. Ito, Wataru Higemoto, Akihiro Koda, Jumpei G. Nakamura, Koichiro Shimomura

    Interactions   245 ( 1 )   2024.2

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1007/s10751-024-01866-5

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    Other Link: https://link.springer.com/article/10.1007/s10751-024-01866-5/fulltext.html

  • Nanoscale dynamics of hydrogen in VO2 studied by μSR

    H. Okabe, M. Hiraishi, A. Koda, Y. Matsushita, T. Ohsawa, N. Ohashi, R. Kadono

    Physical Review Materials   2024.2

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevMaterials.8.024602

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  • Quantum criticality in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>YbCu</mml:mi><mml:mn>4</mml:mn></mml:msub><mml:mi>Ni</mml:mi></mml:mrow></mml:math>

    Kotaro Osato, Takanori Taniguchi, Hirotaka Okabe, Takafumi Kitazawa, Masahiro Kawamata, Zhao Hongfei, Yoichi Ikeda, Yusuke Nambu, Dita Puspita Sari, Isao Watanabe, Jumpei G. Nakamura, Akihiro Koda, Jun Gouchi, Yoshiya Uwatoko, Masaki Fujita

    Physical Review B   109 ( 2 )   2024.1

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    Publishing type:Research paper (scientific journal)   Publisher:American Physical Society (APS)  

    DOI: 10.1103/physrevb.109.024435

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    Other Link: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevB.109.024435/fulltext

  • μSR studies on copper minerals Reviewed

    Masayoshi Fujihala, Hirotaka Okabe, Akihiro Koda

    Interactions   245   13   2024

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/S10751-024-01856-7

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  • Na-ion dynamics in the solid solution NaxCa1−xCr2O4 studied by muon spin rotation and neutron diffraction

    Elisabetta Nocerino, Ola Kenji Forslund, Hiroya Sakurai, Nami Matsubara, Anton Zubayer, Federico Mazza, Stephen Cottrell, Akihiro Koda, Isao Watanabe, Akinori Hoshikawa, Takashi Saito, Jun Sugiyama, Yasmine Sassa, Martin Månsson

    Sustainable Energy &amp; Fuels   8 ( 7 )   1424 - 1437   2024

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    Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry (RSC)  

    Thermally activated Na diffusion mechanism in the honeycomb-like 1D channels of the solid solution NaxCa1−xCr2O4.

    DOI: 10.1039/d3se01097j

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  • Magnetic Instability of Pr3Ru4Sn13

    Takanori Taniguchi, Shinnosuke Kitayama, Hirotaka Okabe, Jumpei G. Nakamura, Akihiro Koda, Motoyuki Ishikado, Masaki Fujita

    Journal of the Physical Society of Japan   92 ( 12 )   2023.12

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    Publishing type:Research paper (scientific journal)   Publisher:Physical Society of Japan  

    DOI: 10.7566/jpsj.92.124703

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  • Development of transient <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si45.svg" display="inline" id="d1e172"><mml:mi>μ</mml:mi></mml:math>SR method for high-flux pulsed muons

    Shoichiro Nishimura, Hirotaka Okabe, Masatoshi Hiraishi, Masanori Miyazaki, Jumpei G. Nakamura, Akihiro Koda, Ryosuke Kadono

    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   1056   168669 - 168669   2023.11

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.nima.2023.168669

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  • Competition between magnetic interactions and structural instabilities leading to itinerant frustration in the triangular lattice antiferromagnet LiCrSe2

    Elisabetta Nocerino, Shintaro Kobayashi, Catherine Witteveen, Ola K. Forslund, Nami Matsubara, Chiu Tang, Takeshi Matsukawa, Akinori Hoshikawa, Akihiro Koda, Kazuyoshi Yoshimura, Izumi Umegaki, Yasmine Sassa, Fabian O. von Rohr, Vladimir Pomjakushin, Jess H. Brewer, Jun Sugiyama, Martin Månsson

    Communications Materials   4 ( 1 )   2023.10

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    Abstract

    LiCrSe2 constitutes a recent valuable addition to the ensemble of two-dimensional triangular lattice antiferromagnets. In this work, we present a comprehensive study of the low temperature nuclear and magnetic structure established in this material. Being subject to a strong magnetoelastic coupling, LiCrSe2 was found to undergo a first order structural transition from a trigonal crystal system ($$P\bar{3}m1$$) to a monoclinic one (C2/m) at Ts = 30 K. Such restructuring of the lattice is accompanied by a magnetic transition at TN = 30 K. Refinement of the magnetic structure with neutron diffraction data and complementary muon spin rotation analysis reveal the presence of a complex incommensurate magnetic structure with a up-up-down-down arrangement of the chromium moments with ferromagnetic double chains coupled antiferromagnetically. The spin axial vector is also modulated both in direction and modulus, resulting in a spin density wave-like order with periodic suppression of the chromium moment along the chains. This behavior is believed to appear as a result of strong competition between direct exchange antiferromagnetic and superexchange ferromagnetic couplings established between both nearest neighbor and next nearest neighbor Cr3+ ions. We finally conjecture that the resulting magnetic order is stabilized via subtle vacancy/charge order within the lithium layers, potentially causing a mix of two co-existing magnetic phases within the sample.

    DOI: 10.1038/s43246-023-00407-x

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    Other Link: https://www.nature.com/articles/s43246-023-00407-x

  • Ion Dynamics in P2-NaxCoO2 Detected with Operando Muon Spin Rotation and Relaxation

    Kazuki Ohishi, Daisuke Igarashi, Ryoichi Tatara, Izumi Umegaki, Jumpei G. Nakamura, Akihiro Koda, Martin Månsson, Shinichi Komaba, Jun Sugiyama

    ACS Applied Energy Materials   2023.7

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    Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acsaem.3c01197

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  • Direct observation of oxygen polarization in Sr2IrO4 by O K -edge x-ray magnetic circular dichroism

    R. Kadono, M. Miyazaki, M. Hiraishi, H. Okabe, A. Koda, K. Amemiya, H. Nakao

    Physical Review B   2023.5

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevB.107.L201122

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  • Local Magnetism in the Spin-singlet State of VO2

    Hirotaka Okabe, Masatoshi Hiraishi, Akihiro Koda, Yoshitaka Matsushita, Takeo Ohsawa, Naoki Ohashi, Ryosuke Kadono

    Proceedings of the 29th International Conference on Low Temperature Physics (LT29)   2023.5

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    Publishing type:Research paper (international conference proceedings)   Publisher:Journal of the Physical Society of Japan  

    DOI: 10.7566/jpscp.38.011117

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  • Local electronic structure of interstitial hydrogen in MgH2 inferred from muon study Reviewed

    Ryosuke Kadono, Masatoshi Hiraishi, Hirotaka Okabe, Akihiro Koda, Takashi U Ito

    Journal of Physics: Condensed Matter   35 ( 28 )   285503 - 285503   2023.4

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    Publishing type:Research paper (scientific journal)   Publisher:IOP Publishing  

    Abstract

    Magnesium hydride has great potential as a solid hydrogen (H) storage material because of its high H storage capacity of 7.6 wt%. However, its slow hydrogenation and dehydrogenation kinetics and the high temperature of 300 C required for decomposition are major obstacles to small-scale applications such as automobiles. The local electronic structure of interstitial H in MgH2 is an important fundamental knowledge in solving this problem, which has been studied mainly based on density functional theory (DFT). However, few experimental studies have been performed to assess the results of DFT calculations. We have therefore introduced muon (Mu) as pseudo-H into MgH2 and investigated the corresponding interstitial H states by analyzing their electronic and dynamical properties in detail. As a result, we observed multiple Mu states similar to those observed in wide-gap oxides, and found that their electronic states can be attributed to relaxed–excited states associated with donor/acceptor levels predicted by the recently proposed ‘ambipolarity model’. This provides an indirect support for the DFT calculations on which the model is based via the donor/acceptor levels. An important implication of the muon results for improved hydrogen kinetics is that dehydrogenation, serving as a reduction for hydrides, stabilises the interstitial H state.

    DOI: 10.1088/1361-648x/acccc7

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  • New beamlines and future prospects of the J-PARC muon facility

    Takayuki Yamazaki, , Naritoshi Kawamura, Koichiro Shimomura, Yasuhiro Miyake, Yu Oishi, Taihei Adachi, Patrick Strasser, Akihiro Koda, Hiroshi Fujimori, Takahiro Yuasa, Yutaka Ikedo, Yasuo Kobayashi, Ken-ichi Sasaki, Tsutomu Mibe, Takahiro Ushizawa, Yuta Higashino, Daiki Nagao, Masaharu Aoki, Kazuya Hase, Satoshi Kaneko, Ryota Tagawa, Taichi Uematsu, Yoshihiro Seiya, Satoshi Uetake, Takahiro Masuda, Hiroki Tada, So Sugiyama, Kazuhito Suzuki

    EPJ Web of Conferences   282   01016 - 01016   2023.4

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    At the J-PARC muon facility (MUSE), new beamlines started operation recently. H-line is a high-intensity pulsed muon beamline for fundamental physics experiments. The first beam of the H-line was delivered to its first branch (H1 area) in January 2022, where a precise measurement of the muonium hyperfine structure and a search for μ-e conversion will be conducted. Further extension of the second branch of the H-line for a muon g-2/EDM experiment and a transmission muon microscope project is also ongoing. In addition, the second branch of the surface muon beamline (S2 area of the S-line) was opened for a muonium 1S-2S spectroscopy experiment in FY2021. In this paper, the recent upgrade and present status of the J-PARC muon facility and its prospects are presented.

    DOI: 10.1051/epjconf/202328201016

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  • Sodium Diffusion in Hard Carbon Studied by Small- and Wide-Angle Neutron Scattering and Muon Spin Relaxation

    Kazuki Ohishi, Daisuke Igarashi, Ryoichi Tatara, Yukihiko Kawamura, Kosuke Hiroi, Jun-ichi Suzuki, Izumi Umegaki, Shoichiro Nishimura, Akihiro Koda, Shinichi Komaba, Jun Sugiyama

    Journal of Physics: Conference Series   2462 ( 1 )   012048 - 012048   2023.3

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    Abstract

    Hard carbon is the most common anode material for Na-ion battery. The structure of the hard carbon and the dynamics of Na-ion in hard carbon were studied with small- and wide-angle neutron scattering and muon spin relaxation technique. The neutron scattering revealed the increase of interlayer distance between graphenes and decrease of the size of nanopores with increasing sodium intercalation in hard carbon. The muon spin relaxation revealed that a systematic increase in the field fluctuation rate with increasing temperature evidenced a thermally activated sodium diffusion. Assuming the two-dimensional diffusion of Na-ion in the graphene layers, the self-diffusion coefficient of Na-ion was estimated to be 2.6 × 10−11 cm2/s at 310 K, with a thermal activation energy of 39(7) meV.

    DOI: 10.1088/1742-6596/2462/1/012048

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  • Present status of J-PARC MUSE

    K Shimomura, A Koda, A D Pant, H Natori, H Fujimori, I Umegaki, J Nakamura, M Tampo, N Kawamura, N Teshima, P Strasser, R Kadono, R Iwai, S Matoba, S Nishimura, S Kanda, S Takeshita, T Yuasa, T Yamazaki, Y Miyake, Y Kobayashi, Y Oishi, Y Nagatani, Y Ikedo, W Higemoto, T Ito

    Journal of Physics: Conference Series   2462 ( 1 )   012033 - 012033   2023.3

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    <jats:title>Abstract</jats:title>
    <jats:p>At J-PARC MUSE, since the <jats:italic>µ</jats:italic>SR2017 conference and up to FY2022, there have been several new developments at the facility, including the completion of a new experimental area S2 at the surface muon beamline S-line and the first muon beam extraction to the H1 area in the H-line, mainly to carry out high-statistics fundamental physics experiments. Several new studies are also underway, such as applying negative muon non-destructive elemental analysis to the analysis of samples returned from the asteroid Ryugu in the D2 area of the D-line. This paper reports on the latest status of MUSE.</jats:p>

    DOI: 10.1088/1742-6596/2462/1/012033

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  • Spin gap in the weakly interacting quantum spin chain antiferromagnet KCuPO$_{4}$$\cdot$H$_{2}$O Reviewed

    Fujihara Masayoshi, Hagihara Masato, Morita Katsuhiro*, Murai Naoki, Koda Akihiro*, Okabe Hirotaka*, Mitsuda Setsuo*

    Physical Review B   107 ( 5 )   054435\_1 - 054435\_8   2023.2

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    The $S$ = 1/2 Heisenberg linear chain antiferromagnet is the simplest spin model; nevertheless it serves as a platform for various quantum many-body phenomena. Here, we report the magnetic behavior of a quasi-one-dimensional antiferromagnet KCuPO$_{4}$$\cdot$H$_{2}$O. A long-range commensurate antiferromagnetic order with ordered moment 0.31(1) $\mu_{\rm{B } }$ per spin occurs at $T_{\rm{N } }$ = 11.7(1) K. Above $T_{\rm{N } }$, the inelastic neutron excitation is characterized by a two spinon continuum. The intrachain interaction $J$ and interchain interaction $|J'|$ are estimated to be 172 K and 4.25(4) K, respectively; thus the ratio of the $|J'|$/$J$ = 0.0247(3). At lower energies, below $T_{\rm{N } }$, a spin gap is observed in the dispersive excitations. These results are consistent with characteristics observed in weakly interacting $S$ = 1/2 Heisenberg chain system.

    DOI: 10.1103/PhysRevB.107.054435

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  • Local electronic structure of dilute hydrogen in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>β</mml:mi><mml:mtext>−</mml:mtext><mml:msub><mml:mi>Ga</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math> probed by muons

    M. Hiraishi, H. Okabe, A. Koda, Ryosuke Kadono, Takeo Ohsawa, Naoki Ohashi, Keisuke Ide, T. Kamiya, H. Hosono

    Physical Review B   107 ( 4 )   2023.1

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    DOI: 10.1103/physrevb.107.l041201

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  • Local spin dynamics in the geometrically frustrated Mo pyrochlore antiferromagnet <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Lu</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>Mo</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mrow><mml:mn>5</mml:mn><mml:mo>−</mml:mo><mml:mi>y</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi mathvariant="normal">N</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>

    S. K. Dey, K. Ishida, H. Okabe, M. Hiraishi, A. Koda, T. Honda, J. Yamaura, H. Kageyama, R. Kadono

    Physical Review B   107 ( 2 )   2023.1

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    DOI: 10.1103/physrevb.107.024407

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  • Birchite Cd$_{2}$Cu$_{2}$(PO$_{4}$)$_{2}$SO$_{4}$ $\cdot$ 5H$_{2}$O as a model antiferromagnetic spin-1/2 Heisenberg ${\it J}$$_{1}$-${\it J}$$_{2}$ chain Reviewed

    Fujihara Masayoshi, Jeschke H. O.*, Morita Katsuhiro*, Kuwai Tomohiko*, Koda Akihiro*, Okabe Hirotaka*, Matsuo Akira*, Kindo Koichi*, Mitsuda Setsuo*

    Physical Review Materials (Internet)   6 ( 11 )   114408\_1 - 114408\_8   2022.11

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    ${\it S}$ = 1/2 Heisenberg ${\it J}$$_{1}$-${\it J}$$_{2}$ chain antiferromagnets have been investigated extensively due to their exotic magnetic states. Here, we report the magnetic behavior of birchite Cd$_{2}$Cu$_{2}$(PO$_{4}$)$_{2}$SO$_{4}$$\cdot$5H$_{2}$O and its effective spin model. Experimental studies by magnetic susceptibility, magnetization, heat capacity, and $\mu$SR measurements indicate the absence of long-range order down to 0.4 K. Theoretical studies reveal that birchite is a model compound for the ${\it J}$$_{1}$-${\it J}$$_{2}$ antiferromagnetic chain: the intrachain interactions ${\it J}$$_{1}$ and ${\it J}$$_{2}$ are antiferromagnetic and their magnitude is about 100 times larger than the interchain interactions. The magnitude of ${\it J}$$_{2}$ is two to three times larger than that of ${\it J}$$_{1}$, thus the spin gap is expected to be only a few percent of that of ${\it J}$$_{1}$. The temperature dependence of the specific heat shows a broad peak at about 1 K ($\simeq$ 0.036 ${\it J}$$_{1}$), which suggests the presence of a spin gap.

    DOI: 10.1103/PhysRevMaterials.6.114408

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  • Operando Muon Spin Rotation and Relaxation Measurement on LiCoO2 Half-Cell

    Kazuki Ohishi, Daisuke Igarashi, Ryoichi Tatara, Izumi Umegaki, Akihiro Koda, Shinichi Komaba, Jun Sugiyama

    ACS Applied Energy Materials   2022.10

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    DOI: 10.1021/acsaem.2c02175

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  • Pyrochlore oxide Hg2Os2O7 on verge of metal–insulator boundary Reviewed

    Kota Kataoka, Daigorou Hirai, Akihiro Koda, Ryosuke Kadono, Takashi Honda, Zenji Hiroi

    Journal of Physics: Condensed Matter   34 ( 13 )   135602 - 135602   2022.3

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    <title>Abstract</title>
    Semimetallic osmium pyrochlore oxide Cd2Os2O7 undergoes a magnetic transition to an all-in–all-out (AIAO)-type order at 227 K, followed by a crossover to an AIAO insulator at around 210 K. Here, we studied the isostructural and isoelectronic compound Hg2Os2O7 through thermodynamic measurements, muon spin rotation (μSR) spectroscopy and neutron diffraction experiments. A similar magnetic transition, probably to an AIAO-type order, was observed at 88 K, while the resistivity showed a decrease at the transition and remained metallic down to 2 K. Thus, the ground state of Hg2Os2O7 is most likely an AIAO semimetal, which is analogous to the intermediate-temperature state of Cd2Os2O7. Hg2Os2O7 exists on the verge of the metal–insulator boundary on the metal side and provides an excellent platform for studying the electronic instability of 5<italic>d</italic> electrons with moderate electron correlations and strong spin–orbit interactions.

    DOI: 10.1088/1361-648X/ac4936

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  • Organic molecular dynamics and charge-carrier lifetime in lead iodide perovskite MAPbI3 Reviewed

    Akihiro Koda, Hirotaka Okabe, Masatoshi Hiraishi, Ryosuke Kadono, Katelyn Dagnall, Joshua J. Choi, Seung-Hun Lee

    Proceedings of the National Academy of Sciences   119 ( 4 )   e2115812119   2022.1

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    <jats:title>Significance</jats:title>
    <jats:p>Hybrid organic–inorganic perovskites (HOIPs) are among the most promising materials for next-generation solar cells that combine high efficiency and low cost. The record efficiency of HOIP-based solar cells has reached above 25%, and they can be manufactured using simple solution-processing methods that can be drastically cheaper than the current commercial solar cell technologies. Despite the progress so far, the microscopic mechanism for the high solar cell efficiency in HOIPs is yet to be understood. In this study, we show that the ability of organic molecules to rotate on an appropriate time scale in HOIPs can extend the lifetime of photoexcited charge carriers and lead to higher efficiency. This insight can guide the progress toward improved solar cell performance.</jats:p>

    DOI: 10.1073/pnas.2115812119

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  • μSR Study of Kapellasite-type Quantum Kagome Antiferromagnet CaCu3(OH)6Cl2 ∙ 0.6H2O

    Hiroyuki K. Yoshida, Hirotaka Okabe, Soshi Takeshita, Hubertus Luetkens, Akihiro Koda, Ryosuke Kadono

    Journal of the Physical Society of Japan   91 ( 1 )   2022.1

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    DOI: 10.7566/jpsj.91.013701

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  • Dimensional reduction by geometrical frustration in a cubic antiferromagnet composed of tetrahedral clusters

    Ryutaro Okuma, Maiko Kofu, Shinichiro Asai, Maxim Avdeev, Akihiro Koda, Hirotaka Okabe, Masatoshi Hiraishi, Soshi Takeshita, Kenji M. Kojima, Ryosuke Kadono, Takatsugu Masuda, Kenji Nakajima, Zenji Hiroi

    Nature Communications   12 ( 1 )   2021.12

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    <jats:title>Abstract</jats:title><jats:p>Dimensionality is a critical factor in determining the properties of solids and is an apparent built-in character of the crystal structure. However, it can be an emergent and tunable property in geometrically frustrated spin systems. Here, we study the spin dynamics of the tetrahedral cluster antiferromagnet, pharmacosiderite, via muon spin resonance and neutron scattering. We find that the spin correlation exhibits a two-dimensional characteristic despite the isotropic connectivity of tetrahedral clusters made of spin 5/2 Fe<jats:sup>3+</jats:sup> ions in the three-dimensional cubic crystal, which we ascribe to two-dimensionalisation by geometrical frustration based on spin wave calculations. Moreover, we suggest that even one-dimensionalisation occurs in the decoupled layers, generating low-energy and one-dimensional excitation modes, causing large spin fluctuation in the classical spin system. Pharmacosiderite facilitates studying the emergence of low-dimensionality and manipulating anisotropic responses arising from the dimensionality using an external magnetic field.</jats:p>

    DOI: 10.1038/s41467-021-24636-1

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  • Na Diffusion in Hard Carbon Studied with Positive Muon Spin Rotation and Relaxation

    Kazuki Ohishi, Daisuke Igarashi, Ryoichi Tatara, Shoichiro Nishimura, Akihiro Koda, Shinichi Komaba, Jun Sugiyama

    ACS Physical Chemistry Au   2021.11

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    DOI: 10.1021/acsphyschemau.1c00036

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  • Anomalous diamagnetism of electride electrons in transition metal silicides Reviewed

    M. Hiraishi, K. M. Kojima, H. Okabe, A. Koda, R. Kadono, J. Wu, Y. Lu, H. Hosono

    Physical Review B   103 ( 24 )   L241101   2021.6

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    DOI: 10.1103/physrevb.103.l241101

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  • Muon spin relaxation and fluctuating magnetism in the pseudogap phase of YBa2Cu3Oy

    Z. H. Zhu, J. Zhang, Z. F. Ding, C. Tan, C. S. Chen, Q. Wu, Y. X. Yang, O. O. Bernal, P.-C. Ho, G. D. Morris, A. Koda, A. D. Hillier, S. P. Cottrell, P. J. Baker, P. K. Biswas, J. Qian, X. Yao, D. E. MacLaughlin, L. Shu

    Physical Review B   103 ( 13 )   2021.4

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    DOI: 10.1103/physrevb.103.134426

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  • Local electronic structure of dilute hydrogen in β−MnO2

    H. Okabe, M. Hiraishi, A. Koda, S. Takeshita, K. M. Kojima, I. Yamauchi, T. Ohsawa, N. Ohashi, H. Sato, R. Kadono

    Physical Review B   103 ( 15 )   2021.4

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    DOI: 10.1103/physrevb.103.155121

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  • Simulation Study of Laser Ionization of Muonium by 1S-2S Excitation for the Muon g − 2/EDM Experiment at J-PARC Reviewed

    Ce Zhang, Hideaki Hara, Takahiro Hiraki, Yutaka Ikedo, Yasutaka Imai, Katsuhiko Ishida, Saeid Kamal, Naritoshi Kawamura, Akihiro Koda, Yajun Mao, Takahiko Masuda, Tsutomu Mibe, Yasuhiro Miyake, Yuki Miyamoto, Yu Oishi, Masashi Otani, Patrick Strasser, Koichiro Shimomura, Kazuhito Suzuki, Satoshi Uetake, Takayuki Yamazaki, Shinsuke Yamamoto, Koji Yoshimura, Mitsuhiro Yoshida

    Proceedings of the 3rd J-PARC Symposium (J-PARC2019)   2021.3

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    DOI: 10.7566/jpscp.33.011125

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  • Origin of magnetovolume effect in a cobaltite Reviewed International journal

    Ping Miao, Zhijian Tan, Sanghyun Lee, Yoshihisa Ishikawa, Shuki Torii, Masao Yonemura, Akihiro Koda, Kazuki Komatsu, Shinichi Machida, Asami Sano-Furukawa, Takanori Hattori, Xiaohuan Lin, Kuo Li, Takashi Mochiku, Ryosuke Kikuchi, Chizuru Kawashima, Hiroki Takahashi, Qingzhen Huang, Shinichi Itoh, Ryosuke Kadono, Yingxia Wang, Feng Pan, Kunihiko Yamauchi, Takashi Kamiyama

    Physical Review B   103 ( 9 )   2021.3

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    DOI: 10.1103/physrevb.103.094302

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  • Extreme Suppression of Antiferromagnetic Order and Critical Scaling in a Two-Dimensional Random Quantum Magnet

    Wenshan Hong, Lu Liu, Chang Liu, Xiaoyan Ma, Akihiro Koda, Xin Li, Jianming Song, Wenyun Yang, Jinbo Yang, Peng Cheng, Hongxia Zhang, Wei Bao, Xiaobai Ma, Dongfeng Chen, Kai Sun, Wenan Guo, Huiqian Luo, Anders W. Sandvik, Shiliang Li

    Physical Review Letters   126 ( 3 )   2021.1

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    DOI: 10.1103/physrevlett.126.037201

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  • Na-mobility in P2-Na0.5MgxNi0.17-xMn0.83O2 (0 ≤ x ≤ 0.07) from electrochemical and muon-spin relaxation studies

    Le Anh Ma, Rasmus Palm, Elisabetta Nocerino, Ola Kenji Forslund, Nami Matsubara, Stephen P Cottrell, Koji yokoyama, Akihiro Koda, Jun Sugiyama, Yasmine Sassa, Martin Mansson, Reza Younesi

    Physical Chemistry Chemical Physics   2021

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    Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry (RSC)  

    Sodium transition metal oxides with a layered structure are one of the most widely studied cathode materials for a Na+-ion battery. Since the mobility of Na+ in such cathode materials...

    DOI: 10.1039/d1cp03115e

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  • Magnetic behavior of T′ -type Eu2CuO4 revealed by muon spin rotation and relaxation measurements Reviewed

    M. Fujita, K. M. Suzuki, S. Asano, H. Okabe, A. Koda, R. Kadono, I. Watanabe

    Physical Review B   102 ( 4 )   045116   2020.7

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    DOI: 10.1103/physrevb.102.045116

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  • Gapless spin liquid in a square-kagome lattice antiferromagnet. International journal

    Masayoshi Fujihala, Katsuhiro Morita, Richard Mole, Setsuo Mitsuda, Takami Tohyama, Shin-Ichiro Yano, Dehong Yu, Shigetoshi Sota, Tomohiko Kuwai, Akihiro Koda, Hirotaka Okabe, Hua Lee, Shinichi Itoh, Takafumi Hawai, Takatsugu Masuda, Hajime Sagayama, Akira Matsuo, Koichi Kindo, Seiko Ohira-Kawamura, Kenji Nakajima

    Nature communications   11 ( 1 )   3429 - 3429   2020.7

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    Observation of a quantum spin liquid (QSL) state is one of the most important goals in condensed-matter physics, as well as the development of new spintronic devices that support next-generation industries. The QSL in two dimensional quantum spin systems is expected to be due to geometrical magnetic frustration, and thus a kagome-based lattice is the most probable playground for QSL. Here, we report the first experimental results of the QSL state on a square-kagome quantum antiferromagnet, KCu6AlBiO4(SO4)5Cl. Comprehensive experimental studies via magnetic susceptibility, magnetisation, heat capacity, muon spin relaxation (μSR), and inelastic neutron scattering (INS) measurements reveal the formation of a gapless QSL at very low temperatures close to the ground state. The QSL behavior cannot be explained fully by a frustrated Heisenberg model with nearest-neighbor exchange interactions, providing a theoretical challenge to unveil the nature of the QSL state.

    DOI: 10.1038/s41467-020-17235-z

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  • Hydrogen states in hydrogen-passivated semiconducting barium disilicide measured via muon spin rotation Reviewed

    Zhihao Xu, Takuma Sato, Jumpei Nakamura, Akihiro Koda, Koichiro Shimomura, Andrew B. Filonov, Dmitry B. Migas, Takashi Suemasu

    Japanese Journal of Applied Physics   59 ( 7 )   071004 - 071004   2020.7

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    DOI: 10.35848/1347-4065/ab984b

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  • Electronic charge transfer driven by spin cycloidal structure

    Y. Ishii, S. Horio, Y. Noda, M. Hiraishi, H. Okabe, M. Miyazaki, S. Takeshita, A. Koda, K. M. Kojima, R. Kadono, H. Sagayama, H. Nakao, Y. Murakami, H. Kimura

    Physical Review B   101 ( 22 )   2020.6

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    DOI: 10.1103/physrevb.101.224436

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  • Magnetism driven by strong electronic correlations in the heavily carrier-doped iron oxypnictide LaFeAsO0.49H0.51

    M. Hiraishi, K. M. Kojima, H. Okabe, S. Takeshita, A. Koda, R. Kadono, R. Khasanov, S. Iimura, S. Matsuishi, H. Hosono

    Physical Review B   101 ( 17 )   2020.5

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    DOI: 10.1103/physrevb.101.174414

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  • Slow magnetic fluctuations and critical slowing down in Sr2Ir1−xRhxO4

    C. Tan, Z. F. Ding, J. Zhang, Z. H. Zhu, O. O. Bernal, P. C. Ho, A. D. Hillier, A. Koda, H. Luetkens, G. D. Morris, D. E. MacLaughlin, L. Shu

    Physical Review B   101 ( 19 )   2020.5

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    DOI: 10.1103/physrevb.101.195108

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  • μSR Study of the Magnetic State in Hole and Electron Doped Sr2IrO4 Reviewed

    S. Tsunoda, K. Horigane, H. Okabe, K. Machida, M. Akimitsu, K. Kawashima, R. Horie, K. Kobayashi, A. Koda, R. Kadono, J. Akimitsu

    Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019)   30   011145   2020.3

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    DOI: 10.7566/jpscp.30.011145

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  • Synthesis and physical properties of the new iridium oxyfluoride Sr2Ir(O,F)6−δ using a topochemical reaction method

    K. Kuramochi, T. Shimano, T. Nishio, H. Okabe, A. Koda, K. Horigane, J. Akimitsu, H. Ogino

    Physical Review Materials   4 ( 1 )   2020.1

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    DOI: 10.1103/physrevmaterials.4.013403

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  • Proximity coupling of superconducting nanograins with fractal distributions

    Takashi Uchino, Nanami Teramachi, Ryosuke Matsuzaki, Emi Tsushima, Shusuke Fujii, Yusuke Seto, Kazuyuki Takahashi, Takao Mori, Yutaka Adachi, Yukihito Nagashima, Yoshifumi Sakaguchi, Kazuki Ohishi, Akihiro Koda, Takahiro Sakurai, Hitoshi Ohta

    PHYSICAL REVIEW B   101 ( 3 )   2020.1

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    DOI: 10.1103/PhysRevB.101.035146

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  • Study of the Electronic State of Hydrogen by a Combination of the Muon as Pseudo Hydrogen and First-Principles Calculation

    HIRAISHI M., HOSONO H., KOJIMA K. M., OKABE H., KODA A., KADONO R., IDE K., MATSUISHI S., KUMOMI H., KAMIYA T.

    Journal of Computer Chemistry, Japan   19 ( 3 )   106 - 114   2020

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    <p>We investigated the electronic states of hydrogen in the transparent oxide semiconductor InGaZnO4 (IGZO) using elementary particle muons (Mu) as a light isotope of hydrogen. From the combination of the relaxation rate Δ in Kubo-Toyabe function observed by the muon spin rotation method and the simulation of hydrogen by the first-principles calculation, it was clarified that the muon in the crystalline IGZO and the amorphous thin film IGZO occupies Zn-O bind center position. By analogy with ZnO, it is suggested that the corresponding hydrogen acts as a donor. In contrast, Lorentz-type spectra observed in the hydrogenated thin film IGZO show that some muons exist as MuH at oxygen vacancy positions.</p>

    DOI: 10.2477/jccj.2020-0018

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  • Electronic structure of interstitial hydrogen in In-Ga-Zn-O semiconductor simulated by muon Reviewed

    K. M. Kojima, M. Hiraishi, H. Okabe, A. Koda, R. Kadono, K. Ide, S. Matsuishi, H. Kumomi, T. Kamiya, H. Hosono

    Applied Physics Letters   115 ( 12 )   122104 - 122104   2019.9

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    DOI: 10.1063/1.5117771

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  • Revealing magnetic ground state of a layered cathode material by muon spin relaxation and neutron scattering experiments Reviewed

    Ping Miao, Rui Wang, Weiming Zhu, Jiajie Liu, Tongchao Liu, Jiangtao Hu, Shuankui Li, Zhijian Tan, Akihiro Koda, Fengfeng Zhu, Erxi Feng, Yixi Su, Takashi Kamiyama, Yinguo Xiao, Feng Pan

    Applied Physics Letters   114 ( 20 )   203901 - 203901   2019.5

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    DOI: 10.1063/1.5096620

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  • Quantum magnetisms in uniform triangular lattices Li <inf>2</inf> AMo <inf>3</inf> O <inf>8</inf> (A = In, Sc) Reviewed

    Iida K, Yoshida H, Okabe H, Katayama N, Ishii Y, Koda A, Inamura Y, Murai N, Ishikado M, Kadono R, Kajimoto R

    Scientific Reports   9 ( 1 )   2019

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    DOI: 10.1038/s41598-018-36123-7

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  • Desorption reaction in MgH<inf>2</inf> studied with in situ μ+SR Reviewed

    Sugiyama J, Umegaki I, Matsumoto M, Miwa K, Nozaki H, Higuchi Y, Noritake T, Forslund O.K, M?nsson M, Cottrell S.P, Koda A, Ansaldo E.J, Brewer J.H

    Sustainable Energy and Fuels   3 ( 4 )   956 - 964   2019

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    DOI: 10.1039/c8se00568k

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  • Metallic spin-liquid-like behavior of LiV2 O4 Reviewed

    Okabe, H., Hiraishi, M., Koda, A., Kojima, K.M., Takeshita, S., Yamauchi, I., Matsushita, Y., Kuramoto, Y., Kadono, R.

    Physical Review B   99 ( 4 )   2019

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    DOI: 10.1103/PhysRevB.99.041113

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  • Polaronic nature of a muonium-related paramagnetic center in SrTiO<inf>3</inf> Reviewed

    Ito, T., Higemoto, W., Koda, A., Shimomura, K.

    Applied Physics Letters   115 ( 19 )   2019

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    DOI: 10.1063/1.5125919

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  • Oxidation annealing effects on the spin-glass-like magnetism and appearance of superconductivity in T*-type La<inf>1−</inf>x=<inf>2</inf>Eu<inf>1−</inf>x=<inf>2</inf>Sr<inf>x</inf>CuO<inf>4</inf> (0.14 ≤ x ≤ 0.28) Reviewed

    Asano S, Suzuki K.M, Kudo K, Watanabe I, Koda A, Kadono R, Noji T, Koike Y, Taniguchi T, Kitagawa S, Ishida K, Fujita M

    Journal of the Physical Society of Japan   88 ( 8 )   2019

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    DOI: 10.7566/JPSJ.88.084709

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  • Nuclear magnetic field in solids detected with negative-muon spin rotation and relaxation Reviewed

    Sugiyama J, Umegaki I, Nozaki H, Higemoto W, Hamada K, Takeshita S, Koda A, Shimomura K, Ninomiya K, Kubo M.K

    Physical Review Letters   121 ( 8 )   2018.8

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    DOI: 10.1103/PhysRevLett.121.087202

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  • Reduction Effects on the Cu-Spin Correlation in the Electron-Doped T′-Cuprate Pr1.3−xLa0.7CexCuO4+δ (x = 0.10) Reviewed

    Takuya Sumura, Tsutomu Ishimoto, Hideki Kuwahara, Koshi Kurashima, Yoji Koike, Isao Watanabe, Masanori Miyazaki, Akihiro Koda, Ryosuke Kadono, Tadashi Adachi

    JPS Conference Proceedings   21   011027-1 - 011027-5   2018.3

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    DOI: 10.7566/JPSCP.21.011027

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  • J-PARC Muon Facility MUSE Reviewed

    Yasuhiro Miyake, Koichiro Shimomura, Naritoshi Kawamura, Akihiro Koda, Patrick Strasser, Kenji M. Kojima, Hiroshi Fujimori, Shunsuke Makimura, Yutaka Ikedo, Yasushi Kobayashi, Jumpei Nakamura, Yu Oishi, Soshi Takeshita, Taihei Adachi, Amba Datt Pant, Hirotaka Okabe, Shiro Matoba, Motobobu Tampo, Masatoshi Hiraishi, Koji Hamada, Shougo Doiuchi, Wataru Higemoto, Takashi U. Ito, Ryosuke Kadono

    JPS Conf. Proc.   21   011054 - [6 pages]   2018.3

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    DOI: 10.7566/JPSCP.21.011054

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  • Transportation of Ultra Slow Muon on U-line MLF J-PARC Reviewed

    Amba Datt Pant, Taihei Adachi, Yutaka Ikedo, Yu Oishi, Jumpei Nakamura, Patrick Strasser, Kenji Kojima, Shunsuke Makimura, Naritoshi Kawamura, Akihiro Koda, Takashi Ito, Wataru Higemoto, Koichiro Shimomura, Ryosuke Kadono, Yasuhiro Miyake, Eiko Torikai

    JPS Conf. Proc.   21   011060 - [5 pages]   2018.3

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    DOI: 10.7566/JPSCP.21.011060

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  • Magnetic Properties of One-Dimensional Quantum Spin System Rb2Cu2Mo3O12 Studied by Muon Spin Relaxation

    Seiko Ohira-Kawamura, Keisuke Tomiyasu, Akihiro Koda, Dita P. Sari, Retno Asih, Sungwon Yoon, Isao Watanabe, Kenji Nakajima

    Proceedings of the 14th International Conference on Muon Spin Rotation, Relaxation and Resonance (μSR2017)   2018.3

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    DOI: 10.7566/jpscp.21.011007

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  • Status of the New Surface Muon Beamline at J-PARC MUSE Reviewed

    P. Strasser, A. Koda, K. M. Kojima, T. U. Ito, H. Fujimori, Y. Irie, M. Aoki, Y. Nakatsugawa, W. Higemoto, M. Hiraishi, H. Li, H. Okabe, S. Takeshita, K. Shimomura, N. Kawamura, R. Kadono, Y. Miyake

    JPS Conf. Proc.   21   011061 - [7 pages]   2018.3

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    DOI: 10.7566/JPSCP.21.011061

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  • Magnetic phase diagram of S r2-x L axIr O4 synthesized by mechanical alloying Reviewed

    Horigane, K., Fujii, M., Okabe, H., Kobayashi, K., Horie, R., Ishii, H., Liao, Y.F., Kubozono, Y., Koda, A., Kadono, R., Akimitsu, J.

    Physical Review B   97 ( 6 )   2018.2

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    DOI: 10.1103/PhysRevB.97.064425

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  • Electronic correlation in the quasi-two-dimensional electride Y2 C Reviewed

    Hiraishi, M., Kojima, K.M., Yamauchi, I., Okabe, H., Takeshita, S., Koda, A., Kadono, R., Zhang, X., Matsuishi, S., Hosono, H., Hirata, K., Otani, S., Ohashi, N.

    Physical Review B   98 ( 4 )   2018

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    DOI: 10.1103/PhysRevB.98.041104

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  • Development of Ferromagnetic Fluctuations in Heavily Overdoped (Bi,Pb)2Sr2CuO6+δ Copper Oxides Reviewed

    Kurashima K, Adachi T, Suzuki K.M, Fukunaga Y, Kawamata T, Noji T, Miyasaka H, Watanabe I, Miyazaki M, Koda A, Kadono R, Koike Y

    Physical Review Letters   121 ( 5 )   2018

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    DOI: 10.1103/PhysRevLett.121.057002

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  • Effect of cross-link and filler to MHz dynamics in polybutadiene probed by muon spin relaxation

    Takeshita S., Okabe H., Hiraishi M., Kojima K. M., Koda A., Kadono R., Seto H., Masui T., Wakabayashi N.

    Meeting Abstracts of the Physical Society of Japan   73   2544 - 2544   2018

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    DOI: 10.11316/jpsgaiyo.73.2.0_2544

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  • Magnetic anomaly at around 90K on beta-Pyrochlore oxide CsW2O6 studied by muSR technique

    Koda A., Okabe H., Hiraishi M., Kojima K. M., Kadono R., Mitoka R., Okamoto Y., Takenaka K.

    Meeting Abstracts of the Physical Society of Japan   73   1584 - 1584   2018

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    DOI: 10.11316/jpsgaiyo.73.2.0_1584

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  • Dual magnetic phases in the electron-doped cuprate superconductor R2-xCexCuO4 (R = Eu, Nd)

    Suzuki K. M., Okabe H., Koda A., Kadono R., Fujita M.

    Meeting Abstracts of the Physical Society of Japan   73   1910 - 1910   2018

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    DOI: 10.11316/jpsgaiyo.73.2.0_1910

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  • Molecular weight dependent molecular dynamics in polybutadiene by muon spin relaxation

    Takeshita S., Okabe H., Hiraishi M., Kojima K. M., Koda A., Kadono R., Seto H.

    Meeting Abstracts of the Physical Society of Japan   73   3015 - 3015   2018

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    DOI: 10.11316/jpsgaiyo.73.1.0_3015

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  • Metallic Spin Liquid-like Behavior of LiV2O4

    Okabe H., Hiraishi M., Koda A., Kojima K. M., Takeshita S., Yamauchi I., Matsushita Y., Kuramoto Y., Kadono R.

    Meeting Abstracts of the Physical Society of Japan   73   1416 - 1416   2018

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    DOI: 10.11316/jpsgaiyo.73.2.0_1416

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  • μSR study of the mixed-valent Mn oxide K2Mg4Mn6O15

    Okabe H., Hiraishi M., Takeshita S., Koda A., Kojima K. M., Kadono R., Tanakao Y., Sato H.

    Meeting Abstracts of the Physical Society of Japan   73   2079 - 2079   2018

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    DOI: 10.11316/jpsgaiyo.73.1.0_2079

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  • Magnetic structure and local electronic state of rutile-type helical magnet MnO2 probed by muon

    Kadono R., Okabe H., Hiraishi M., Koda A., Kojima K. M., Takeshita S., Yamauchi I., Sato H.

    Meeting Abstracts of the Physical Society of Japan   73   2212 - 2212   2018

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    DOI: 10.11316/jpsgaiyo.73.1.0_2212

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  • Quantum critical nature of the short-range magnetic order in Sr2-xLaxIrO4

    Rodan, S.T., Yoon, S., Lee, S., Choi, K.-Y., Kim, G., Rhyee, J.-S., Koda, A., Chen, W.-T., Chou, F.

    Physical Review B   98 ( 21 )   2018

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    DOI: 10.1103/PhysRevB.98.214412

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  • Precision Spectroscopy of Muonium Hyperfine Structure in Krypton Gas Target Reviewed

    Ueno Y., Ito T. U., Iwasaki M., Kadono R., Kamigaito O., Kanda S., Kawall D., Kawamura N., Koda A., Kojima K. M., Kubo M. K., Aoki M., Matsuda Y., Mibe T., Miyake Y., Mizutani T., Nagamine K., Nishimura S., Ogitsu T., Okubo R., Saito N., Sasaki K., Fukao M., Sato Y., Seo S., Shimomura K., Strasser P., Sugano M., Tajima M., Tanaka T., Tanaka K. S., Tomono D., Torii H. A., Higashi Y., Torikai E., Toyoda A., Ueno K., Yagi D., Yasuda H., Yamanaka T., Yamazaki T., Yamamoto A., Yoshida M., Yoshioka T., Higuchi T., Iinuma H., Ikedo Y., Ishida K., Ito T.

    Meeting Abstracts of the Physical Society of Japan   73 ( 0 )   690 - 690   2018

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    DOI: 10.11316/jpsgaiyo.73.1.0_690

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  • Correction to: Large Magnetovolume Effect Induced by Embedding Ferromagnetic Clusters into Antiferromagnetic Matrix of Cobaltite Perovskite (Adv. Mater. (2017), 29, (1605991), 10.1002/adma.201605991) Reviewed

    Miao, P., Lin, X., Koda, A., Lee, S., Ishikawa, Y., Torii, S., Yonemura, M., Mochiku, T., Sagayama, H., Itoh, S., Ikeda, K., Otomo, T., Wang, Y., Kadono, R., Kamiyama, T.

    Advanced Materials   30 ( 2 )   2018

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    DOI: 10.1002/adma.201705448

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  • Local electronic structure of interstitial hydrogen in iron disulfide Reviewed

    Okabe, H., Hiraishi, M., Takeshita, S., Koda, A., Kojima, K.M., Kadono, R.

    Physical Review B   98 ( 7 )   2018

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    DOI: 10.1103/PhysRevB.98.075210

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  • Perspective of Muon Production Target at J-PARC MLF MUSE Reviewed

    Shunsuke Makimura, Shiro Matoba, Naritoshi Kawamura, Yukihiro Matsuzawa, Masato Tabe, Hiroyuki Aoyagi, Hiroto Kondo, Yasuo Kobayashi, Hiroshi Fujimori, Yutaka Ikedo, Ryosuke Kadono, Akihiro Koda, Kenji M

    Proc. 14th Int. Conf. on Muon Spin Rotation, Relaxation and Resonance (μSR2017), JPS Conf. Proc.   011059   2018

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    DOI: 10.7566/JPSCP.21.011058

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  • Local spin structure of the α-RuCl3 honeycomb-lattice magnet observed via muon spin rotation/relaxation Reviewed

    Yamauchi, I., Hiraishi, M., Okabe, H., Takeshita, S., Koda, A., Kojima, K.M., Kadono, R., Tanaka, H.

    Physical Review B   97 ( 13 )   2018

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    DOI: 10.1103/PhysRevB.97.134410

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  • Magnetic properties of triangular lattice antiferromagnets Li2AMo3O8 (A = In,Sc) probed by μSR

    Okabe H., Koda A., Hiraishi M., Takeshita S., Kojima K. M., Kadono R., Iida K., Kajimoto R., Yoshida H., Ishii Y., Murai N., Ishikado M., Inamura Y., Nakajima K.

    Meeting Abstracts of the Physical Society of Japan   73   516 - 516   2018

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  • Possible quantum spin liquid state in a square kagome lattice antiferromagnet Cu6AlBiO4(SO4)5・KCl

    Fujihala M., Morita K., Mitsuda S., Tohyama T., Kuwai T., Okabe H., Koda A., Mole R., Yano S.

    Meeting Abstracts of the Physical Society of Japan   73   707 - 707   2018

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  • Possible Tomonaga-Luttinger spin liquid state in the spin-1/2 inequilateral diamond-chain compound K3Cu3AlO2(SO4)(4) Reviewed

    Masayoshi Fujihala, Hiroko Koorikawa, Setsuo Mitsuda, Katsuhiro Morita, Takami Tohyama, Keisuke Tomiyasu, Akihiro Koda, Hirotaka Okabe, Shinichi Itoh, Tetsuya Yokoo, Soshi Ibuka, Makoto Tadokoro, Masaki Itoh, Hajime Sagayama, Reiji Kumai, Youichi Murakami

    SCIENTIFIC REPORTS   7   2017.12

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    DOI: 10.1038/s41598-017-16935-9

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  • Measurement of Muonium Hyperfine Structure at J-PARC Reviewed

    K. S. Tanaka, M. Aoki, Y. Fukao, Y. Higashi, T. Higuchi, H. Iinuma, Y. Ikedo, K. Ishida, T. U. Ito, M. Iwasaki, R. Kadono, O. Kamigaito, S. Kanda, D. Kawall, N. Kawamura, A. Koda, K. M. Kojima, M. K. Kubo, Y. Matsuda, T. Matsudate, T. Mibe, Y. Miyake, T. Mizutani, K. Nagamine, S. Nishimura, K. Nishiyama, T. Ogitsu, R. Okubo, N. Saito, K. Sasaki, S. Seo, K. Shimomura, P. Strasser, M. Sugano, M. Tajima, T. Tanaka, D. Tomono, H. A. Torii, E. Torikai, A. Toyoda, K. Ueno, Y. Ueno, D. Yagi, A. Yamamoto, M. Yoshida

    JPS Conf. Proc.   18   011022 - [6 pages]   2017.11

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    DOI: 10.7566/JPSCP.18.011022

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  • Development of Three Dimensional Muon Beam Profile Monitor for New Spectroscopy of Muonium Reviewed

    Y. Ueno, M. Aoki, M. Fukao, Y. Higashi, T. Higuchi, H. Iinuma, Y. Ikedo, K. Ishida, T. U. Ito, M. Iwasaki, R. Kadono, O. Kamigaito, S. Kanda, D. Kawall, N. Kawamura, A. Koda, K. M. Kojima, M. K. Kubo, Y. Matsuda, T. Matsudate, T. Mibe, Y. Miyake, T. Mizutani, K. Nagamine, S. Nishimura, K. Nishiyama, T. Ogitsu, R. Okubo, N. Saito, K. Sasaki, K. Shimomura, P. Strasser, M. Sugano, M. Tajima, T. Tanaka, K. S. Tanaka, D. Tomono, H. A. Torii, E. Torikai, A. Toyoda, K. Ueno, A. Yamamoto, M. Yoshida

    Proceedings of the 12th International Conference on Low Energy Antiproton Physics (LEAP2016)   2017.11

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    DOI: 10.7566/jpscp.18.011023

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  • Large Magnetovolume Effect Induced by Embedding Ferromagnetic Clusters into Antiferromagnetic Matrix of Cobaltite Perovskite Reviewed

    Ping Miao, Xiaohuan Lin, Akihiro Koda, Sanghyun Lee, Yoshihisa Ishikawa, Shuki Torii, Masao Yonemura, Takashi Mochiku, Hajime Sagayama, Shinichi Itoh, Kazutaka Ikeda, Toshiya Otomo, Yinxia Wang, Ryosuke Kadono, Takashi Kamiyama

    ADVANCED MATERIALS   29 ( 27 )   2017.7

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    DOI: 10.1002/adma.201605991

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  • Excited configurations of hydrogen in the BaTiO3-xHx perovskite lattice associated with hydrogen exchange and transport Reviewed

    T. U. Ito, A. Koda, K. Shimomura, W. Higemoto, T. Matsuzaki, Y. Kobayashi, H. Kageyama

    PHYSICAL REVIEW B   95 ( 2 )   2017.1

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    DOI: 10.1103/physRevB.95.020301

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  • New precise measurement of muonium hyperfine structure interval at J-PARC Reviewed

    Y. Ueno, M. Aoki, Y. Fukao, Y. Higashi, T. Higuchi, H. Iinuma, Y. Ikedo, K. Ishida, T. U. Ito, M. Iwasaki, R. Kadono, O. Kamigaito, S. Kanda, D. Kawall, N. Kawamura, A. Koda, K. M. Kojima, M. K. Kubo, Y. Matsuda, T. Mibe, Y. Miyake, T. Mizutani, K. Nagamine, K. Nishiyama, T. Ogitsu, R. Okubo, N. Saito, K. Sasaki, K. Shimomura, P. Strasser, M. Sugano, M. Tajima, K. S. Tanaka, D. Tomono, H. A. Torii, E. Torikai, A. Toyoda, K. Ueno, A. Yamamoto, M. Yoshida

    HYPERFINE INTERACTIONS   238 ( 1 )   2017.1

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    DOI: 10.1007/s10751-016-1381-7

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  • Present status of muonium HFS measurement at J-PARC Reviewed

    K. Shimomura, M. Aoki, Y. Fukao, Y. Higashi, T. Higuchi, H. Iinuma, Y. Ikedo, K. Ishida, M. Iwasaki, R. Kadono, O. Kamigaito, S. Kanda, D. Kawall, N. Kawamura, A. Koda, K. M. Kojima, K. Kubo, Y. Matsuda, T. Mibe, Y. Miyake, K. Nagamine, T. Ogitsu, N. Saito, K. Sasaki, P. Strasser, M. Tajima, K. S. Tanaka, D. Tomono, H. A. Torii, E. Torikai, A. Toyoda, Y. Ueno, M. Yoshida

    Proceedings of the 7th Meeting on CPT and Lorentz Symmetry, 2016   ( 213029 )   29 - 32   2017

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    DOI: 10.1142/10250

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  • Magnetic ordering in the honeycomb magnet !LaTeX$\alpha$-RuCl3 observed via muon spin rotation/relaxation

    Yamauchi Ichihiro, Hiraishi Masatoshi, Okabe Hirotaka, Takeshita Soshi, Koda Akihiro, Kojima Kenji M., Kadono Ryosuke, Tanaka Hidekazu

    Meeting Abstracts of the Physical Society of Japan   72   1910 - 1910   2017

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    DOI: 10.11316/jpsgaiyo.72.1.0_1910

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  • !LaTeX${\mu}$SR study of the two-dimensional magnet with square-planar coordination: Sr2MnO2Cl2

    Okabe H., Hiraishi M., Kojima K. M., Takeshita S., Koda A., Kadono R., Tsujimoto Y., Yu S., Yamaura K.

    Meeting Abstracts of the Physical Society of Japan   72   1079 - 1079   2017

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    DOI: 10.11316/jpsgaiyo.72.1.0_1079

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  • Magnetic ground state of tetrahedral cluster magnet pharmacosiderite investigated by muSR technique

    Koda A., Okabe H., Takeshita S., Hiraishi M., Kojima K.M., Kadono R., Okuma R., Hiroi Z.

    Meeting Abstracts of the Physical Society of Japan   72   1217 - 1217   2017

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    DOI: 10.11316/jpsgaiyo.72.1.0_1217

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  • Magnetic ground state of 5d pyrochlore oxide Hg2Os2O7 investigated by muSR technique

    Koda A., Okabe H., Hiraishi M., Takeshita S., Kojima K. M., Kadono R., Kataoka K., Hirai D., Hiroi Z.

    Meeting Abstracts of the Physical Society of Japan   72   1794 - 1794   2017

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    DOI: 10.11316/jpsgaiyo.72.2.0_1794

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  • Electronic structure of interstitial hydrogen in pyrite (FeS2)

    Kadono R., Okabe H., Koda A., Hiraishi M., Kojima K. M., Takeshita S.

    Meeting Abstracts of the Physical Society of Japan   72   2344 - 2344   2017

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    DOI: 10.11316/jpsgaiyo.72.2.0_2344

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  • Magnetism and reduction anneal effects of Eu2CuO4

    Suzuki K. M., Asano S., Okabe H., Koda A., Kadono R., Fujita M.

    Meeting Abstracts of the Physical Society of Japan   72   1997 - 1997   2017

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    DOI: 10.11316/jpsgaiyo.72.2.0_1997

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  • Study of two dimensional electride Y2C probed by muon Knight shift

    Hiraishi M., Hirata K., Otani S., Ohashi N., Kojima K. M., Okabe H., Takeshita S., Koda A., Kadono R., Zhang Xiao, Matsuishi S., Hosono H.

    Meeting Abstracts of the Physical Society of Japan   72   1333 - 1333   2017

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    DOI: 10.11316/jpsgaiyo.72.2.0_1333

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  • High precision magnetic field mapping method for the Muonium hyperfine structure measurement

    Tanaka T., Kadono R., Kamigaito O., Kanda S., Kawall D., Kawamura N., Koda A., Kojima K. M., Kubo M. K., Matsuda Y., Mibe T., Aoki M., Miyake Y., Nagamine K., Nishimura S., Ogitsu T., Okubo R., Saito N., Sasaki K., Seo S., Shimomura K., Strasser P., Fukao Y., Sugano M., Tanaka K. S., Tomono D., Torii H. A., Torikai E., Toyoda A., Ueno K., Yagi D., Yamamoto A., Yoshida M., Iinuma H., Ikedo Y., Ishida K., Ito T. U., Iwasaki M., Ueno Y.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   56 - 56   2017

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    DOI: 10.11316/jpsgaiyo.72.2.0_56

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  • Impurity hydrogen site and electronic state in wide-gap semiconductor ZnO as investigated by muon spectroscopy

    Kojima K. M., Hiraishi M., Okabe H., Koda A., Kadono R., Ohashi N.

    Meeting Abstracts of the Physical Society of Japan   72   2342 - 2342   2017

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    DOI: 10.11316/jpsgaiyo.72.2.0_2342

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  • Development of the magnetic probe for precision measurement of muonium hyperfine structure in 1.7 T field

    Seo S., Kamigaito O., Kanda S., Kawall D., Kawamura N., Koda A., Kojima K. M., Kubo M. K., Matsuda Y., Mibe T., Miyake Y., Aoki M., Nagamine K., Nishimura S., Ogitsu T., Okubo R., Saito N., Sasaki K., Ueno Y., Shimomura K., Strasser P., Sugano M., Fukao Y., Tanaka T., Tanaka K. S., Tomono D., Torii H. A., Torikai E., Toyoda A., Ueno K., Yagi D., Yamamoto A., Yoshida M., Iinuma H., Ikedo Y., Ishida K., Ito T. U., Iwasaki M., Kadono R.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   55 - 55   2017

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    DOI: 10.11316/jpsgaiyo.72.2.0_55

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  • Evaluation and improvement of systematic uncertainty Apparatus development for precision measurement of muonium hyperfine structure Reviewed

    Seo S., Iwasaki M., Kadono R., Kamigaito O., Kanda S., Kawall D., Kawamura N., Koda A., Kojima K. M., Kubo M. K., Matsuda Y., Aoki M., Matsudate T., Mibe T., Miyake Y., Mizutani T., Nagamine K., Nishimura S., Ogitsu T., Okubo R., Saito N., Sasaki K., Fukao M., Ueno Y., Shimomura K., Strasser P., Sugano M., Tajima M., Tanaka T., Tanaka K. S., Tomono D., Torii H. A., Torikai E., Higashi Y., Toyoda A., Ueno K., Yagi D., Yamamoto A., Yoshida M., Higuchi T., Iinuma H., Ikedo Y., Ishida K., Ito T. U.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   80 - 80   2017

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    DOI: 10.11316/jpsgaiyo.72.1.0_80

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  • Materials and Life Science Experimental Facility at the Japan Proton Accelerator Research Complex IV: The Muon Facility Reviewed

    W. Higemoto, R. Kadono, N. Kawamura, A. Koda, K. M. Kojima, S. Makimura, S. Matoba, Y. Miyake, K. Shimomura, P. Strasser

    Quantum Beam Sci.   1 ( 11 )   1 - 24   2017

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  • Development of the neutron detector for the muonium HFS precision measurement Reviewed

    Yagi D., Iwasaki M., Kadono R., Kamigaito O., Kanda S., Kawall D., Kawamura N., Koda A., Kojima K. M., Kubo M. K., Matsuda Y., Aoki M., Matsudate T., Mibe T., Miyake Y., Mizutani T., Nagamine K., Nishimura S., Ogitsu T., Okubo R., Saito N., Sasaki K., Fukao M., Seo S., Shimomura K., Strasser P., Sugano M., Tajima M., Tanaka T., Tanaka K. S., Tomono D., Torii H. A., Torikai E., Higashi Y., Toyoda A., Ueno K., Ueno Y., Yamamoto A., Yoshida M., Higuchi T., Iinuma H., Ikedo Y., Ishida K., Ito T. U.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   282 - 282   2017

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    DOI: 10.11316/jpsgaiyo.72.1.0_282

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  • Direct measurement of muonium ground state hyperfine splitting with high-intensity pulsed muon beam at J-PARC Reviewed

    Kanda S., Iwasaki M., Kadono R., Kamigaito O., Kawall D., Kawamura N., Koda A., Kojima K.M., Kubo M.K., Matsuda Y., Matsudate T., Aoki M., Mibe T., Miyake Y., Mizutani T., Nagamine K., Nishimura S., Ogitsu T., Okubo R., Saito N., Sasaki K., Seo S., Fukao Y., Shimomura K., Strasser P., Sugano M., Tajima M., Tanaka K.S., Tanaka T., Tomono D., Torii H.A., Torikai E., Toyoda A., Higashi Y., Ueno K., Ueno Y., Yagi D., Yamamoto A., Yoshida M., Higuchi T., Iinuma H., Ikedo Y., Ishida K., Ito T.U.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   79 - 79   2017

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    DOI: 10.11316/jpsgaiyo.72.1.0_79

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  • Novel charge-spin cross dynamics in pyrochlore compound Cd2Os2O7 with All-In-All-Out magnetic structure

    Koda A., Kadono R., Okabe H., Hiraishi M., Takeshita S., Kojima K. M., Hirose H., Hiroi Z., Yamaura J.

    Meeting Abstracts of the Physical Society of Japan   72   2320 - 2320   2017

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    DOI: 10.11316/jpsgaiyo.72.1.0_2320

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  • Dynamical magnetism in the iron-based ladder compound BaFe2Se3 probed by neutrons and muons

    Nambu Y., Imaizummi S., Hashizume K., Aoyama T., Imai Y., Ohgushi K., Suzuki K. M., Hawai T., Nagao M., Yokoo T., Itoh S., Okabe H., Koda A., Kadono Y.

    Meeting Abstracts of the Physical Society of Japan   72   1589 - 1589   2017

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    DOI: 10.11316/jpsgaiyo.72.2.0_1589

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  • Observation of oxygen magnetism in multiferroic RMn2O5 (R=Y,Eu) by ${\mu}$SR measurement

    Ishii Y., Kimura H., Okabe H., Takeshita S., Koda A., Kadono R.

    Meeting Abstracts of the Physical Society of Japan   72   2012 - 2012   2017

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    DOI: 10.11316/jpsgaiyo.72.1.0_2012

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  • Magnetic ground state of secondary magnetic phase under pressure in LaFeAsO1-xHx probed by muon spin rotation.

    Hiraishi M., Kojima K. M., Okabe H., Takeshita S., Koda A., Kadono R., Iimura S., Matsuishi S., Hosono H.

    Meeting Abstracts of the Physical Society of Japan   72   2003 - 2003   2017

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    DOI: 10.11316/jpsgaiyo.72.1.0_2003

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  • Dynamics of polybutadiene reinforced with unsaturated carboxylate studied by muon spin relaxation (mu SR) Reviewed

    Ryo Mashita, Hiroyuki Kishimoto, Rintaro Inoue, Akihiro Koda, Ryosuke Kadono, Toshiji Kanaya

    POLYMER   105   510 - 515   2016.11

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    DOI: 10.1016/j.polymer.2016.07.050

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  • Strong Electron Correlation behind the Superconductivity in Ce-Free and Ce-Underdoped High-Tc T’-Cuprates Reviewed

    Tadashi Adachi, Akira Takahashi, Kensuke M. Suzuki, Malik A. Baqiya, Takuya Konno, Tomohisa Takamatsu, Masatsune Kato, Isao Watanabe, Akihiro Koda, Masanori Miyazaki, Ryosuke Kadono, Yoji Koike

    Journal of the Physical Society of Japan   85 ( 11 )   114716-1 - 114716-6   2016.11

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    To investigate the electronic state of Ce-free and Ce-underdoped high-<italic>T</italic>ccuprates with the so-called T′ structure, we have performed muon spin relaxation (μSR) and specific heat measurements of Ce-free T′-La1.8Eu0.2CuO4+δ(T′-LECO) polycrystals and Ce-underdoped T′-Pr1.3−<italic>x</italic>La0.7Ce<italic>x</italic>CuO4+δ(T′-PLCCO) single crystals with <italic>x</italic>= 0.10. The μSR spectra of the reduced superconducting samples of both T′-LECO with <italic>T</italic>c= 15 K and T′-PLCCO with <italic>x</italic>= 0.10 and <italic>T</italic>c= 27 K have revealed that a short-range magnetic order coexists with the superconductivity in the ground state. The formation of a short-range magnetic order due to a very small amount of excess oxygen in the reduced superconducting samples strongly suggests that the Ce-free and Ce-underdoped T′-cuprates are strongly correlated electron systems.

    DOI: 10.7566/JPSJ.85.114716

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  • Metal-insulator transition and pseudogap in Bi1.76Pb0.35Sr1.89CuO6+delta high-T-c cuprates Reviewed

    M. Miyazaki, R. Kadono, M. Hiraishi, A. Koda, K. M. Kojima, Y. Fukunaga, Y. Tanabe, T. Adachi, Y. Koike

    PHYSICAL REVIEW B   94 ( 11 )   2016.9

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    DOI: 10.1103/PhysRevB.94.115123

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  • New muonium HFS measurements at J-PARC/MUSE Reviewed

    P. Strasser, M. Aoki, Y. Fukao, Y. Higashi, T. Higuchi, H. Iinuma, Y. Ikedo, K. Ishida, T. U. Ito, M. Iwasaki, R. Kadono, O. Kamigaito, S. Kanda, D. Kawall, N. Kawamura, A. Koda, K. M. Kojima, K. Kubo, Y. Matsuda, Y. Matsudate, T. Mibe, Y. Miyake, T. Mizutani, K. Nagamine, S. Nishimura, K. Nishiyama, T. Ogitsu, R. Okubo, N. Saito, K. Sasaki, S. Seo, K. Shimomura, M. Sugano, M. Tajima, K. S. Tanaka, T. Tanaka, D. Tomono, H. A. Torii, E. Torikai, A. Toyoda, K. Ueno, Y. Ueno, D. Yagi, A. Yamamoto, M. Yoshida

    HYPERFINE INTERACTIONS   237 ( 1 )   2016.8

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    DOI: 10.1007/s10751-016-1331-4

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  • Cage electron-hydroxyl complex state as electron donor in mayenite

    M. Hiraishi, K. M. Kojima, M. Miyazaki, I. Yamauchi, H. Okabe, A. Koda, R. Kadono, S. Matsuishi, H. Hosono

    PHYSICAL REVIEW B   93 ( 12 )   2016.3

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    DOI: 10.1103/PhysRevB.93.121201

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  • High-Precision Microwave Spectroscopy of Muonium for Determination of Muonic Magnetic Moment Reviewed

    H. A. Torii, Y. Higashi, T. Higuchi, Y. Matsuda, T. Mizutani, M. Tajima, K. S. Tanaka, Y. Ueno, Y. Fukao, H. Iinuma, Y. Ikedo, R. Kadono, N. Kawamura, A. Koda, K. M. Kojima, T. Mibe, Y. Miyake, K. Nagamine, K. Nishiyama, T. Ogitsu, R. Okubo, N. Saito, K. Sasaki, K. Shimomura, P. Strasser, M. Sugano, A. Toyoda, K. Ueno, A. Yamamoto, M. Yoshida, K. Ishida, M. Iwasaki, O. Kamigaito, D. Tomono, S. Kanda, K. Kubo, M. Aoki, E. Torikai, D. Kawall

    International Journal of Modern Physics: Conference Series   40   1660076 - 1660076   2016.1

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    The muonium atom is a system suitable for precision measurements for determination of muon’s fundamental properties as well as for the test of quantum electrodynamics (QED). A microwave spectroscopy experiment of this exotic atom is being prepared at J-PARC, jointly operated by KEK and JAEA in Japan, aiming at an improved relative precision at a level of [Formula: see text] in determination of the muonic magnetic moment. A major improvement of statistical uncertainty is expected with the higher muon intensity of the pulsed beam at J-PARC, while reduction of various sources of systematic uncertainties are being studied: those arising from microwave power fluctuations, magnetic field inhomogeneity, muon stopping distribution and atomic collisional shift of resonance frequencies. Experimental strategy and methods are presented in this paper, with an emphasis on our recent development of apparatuses and evaluation of systematic uncertainties.

    DOI: 10.1142/s2010194516600764

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  • 22pAQ-6 Electronic state of hydrogen impurities in perovskite oxides probed by μSR spectroscopy III

    Ito T. U., Higemoto W., Koda A., Nishiyama K., Shimomura K.

    Meeting Abstracts of the Physical Society of Japan   71   2769 - 2769   2016

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    DOI: 10.11316/jpsgaiyo.71.1.0_2769

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  • 21pBN-11 Ground state of the honeycomb spin system RuCl_3 observed via muon spin rotation/relaxation

    Yamauchi I., Hiraishi M., Okabe H., Takeshita S., Koda A., Kojima K. M., Kadono R., Tanaka H.

    Meeting Abstracts of the Physical Society of Japan   71   2319 - 2319   2016

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    DOI: 10.11316/jpsgaiyo.71.1.0_2319

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  • 19aBQ-12 Magnetic ground state of heavily overdoped LaFeAsO_<1-x>H_x probed by muon spin rotation/relaxation

    Hiraishi M., Kojima K. M., Yamauchi I., Okabe H., Takeshita S., Koda A., Kadono R., Iimura S., Matsuishi S., Hosono H.

    Meeting Abstracts of the Physical Society of Japan   71   2001 - 2001   2016

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    DOI: 10.11316/jpsgaiyo.71.1.0_2001

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  • 19pAF-5 Progress on the construction of the surface muon beamline "S-Line" at J-PARC MUSE III

    Koda A., Strasser P., Kojima K.M., Kawamura N., Fujimori H., Irie Y., Kobayashi Y., Nakatsugawa Y., Okabe H., Shimomura K., Kadono R., Miyake Y., Ito T.U., Higemoto W., Aoki M.

    Meeting Abstracts of the Physical Society of Japan   71   2665 - 2665   2016

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    DOI: 10.11316/jpsgaiyo.71.1.0_2665

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  • Development of the neutron detector for the muonium HFS precision measurement Reviewed

    Yagi D, Iwasaki M, Kadono R, Kamigaito O, Kanda S, Kawall D, Kawamura N, Koda A, Kojima K M, Kubo M K, Matsuda Y, Aoki M, Matsudate T, Mibe T, Miyake Y, Mizutani T, Nagamine K, Nishimura S, Ogitsu T, Okubo R, Saito N, Sasaki K, Fukao M, Seo S, Shimomura K, Strasser P, Sugano M, Tajima M, Tanaka T, Tanaka K S, Tomono D, Torii H A, Torikai E, Higashi Y, Toyoda A, Ueno K, Ueno Y, Yamamoto A, Yoshida M, Higuchi T, Iinuma H, Ikedo Y, Ishida K, Ito T U

    Meeting Abstracts of the Physical Society of Japan   71 ( 0 )   97 - 97   2016

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    DOI: 10.11316/jpsgaiyo.71.2.0_97

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  • Precision microwave spectroscopy of muonium hyperfine splitting at J-PARC Reviewed

    Kanda S., Iwasaki M., Kadono R., Kamigaito O., Kawall D., Kawamura N., Koda A., Kojima K.M., Kubo M.K., Matsuda Y., Matsudate T., Aoki M., Mibe T., Miyake Y., Mizutani T., Nagamine K., Nishimura S., Ogitsu T., Okubo R., Saito N., Sasaki K., Seo S., Fukao Y., Shimomura K., Strasser P., Sugano M., Tajima M., Tanaka K.S., Tanaka T., Tomono D., Torii H.A., Torikai E., Toyoda A., Higashi Y., Ueno K., Ueno Y., Yagi D., Yamamoto A., Yoshida M., Higuchi T., Iinuma H., Ikedo Y., Ishida K., Ito T.U.

    Meeting Abstracts of the Physical Society of Japan   71 ( 0 )   94 - 94   2016

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    DOI: 10.11316/jpsgaiyo.71.2.0_94

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  • Commissioning of Muon S1 spectrometer at J-PARC MLF

    Kojima K. M., Koda A., Lee H., Hiraishi M., Okabe H., Takeshita S., Kadono R., Ito T., Murakami T., Shoji M., Suzuki S.Y., Uchida T., Tanaka M.M.

    Meeting Abstracts of the Physical Society of Japan   71   2614 - 2614   2016

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    DOI: 10.11316/jpsgaiyo.71.2.0_2614

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  • Observation of Li-ion diffusion in Olivine-type Li(Fe1-xMnx)PO4 by μSR Reviewed

    Umegaki I., Berlie A., Watanabe I., Sugiyama J., Higuchi Y., Nozaki H., Kobayashi G., Kanno R., Koda A., Miyake Y., Coomer F., Cottrell S.

    Meeting Abstracts of the Physical Society of Japan   71 ( 0 )   1251 - 1251   2016

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    DOI: 10.11316/jpsgaiyo.71.2.0_1251

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  • 22aCE-1 Search for ferromagnetic ground state of two-dimensional electride Y_2C using muon spin relaxation

    Kojima Kenji M., Hiraishi Masatoshi, Okabe Hirotaka, Koda Akihiro, Kadono Ryosuke, Zhang Xiao, Matsuishi Satoshi, Hosono Hideo, Hirata Kazuto, Otani Shigeki, Ohashi Naoki

    Meeting Abstracts of the Physical Society of Japan   71   1776 - 1776   2016

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    DOI: 10.11316/jpsgaiyo.71.1.0_1776

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  • 22aBC-2 Longtime magnetic phase transformation in β'-LiCoPO_4 probed by μSR

    Okabe H., Hiraishi M., Yamauchi I., Takeshita S., Koda A., Kojima K. M., Kadono R., Yoshida H., Miyakawa M., Matsushita Y.

    Meeting Abstracts of the Physical Society of Japan   71   1289 - 1289   2016

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    DOI: 10.11316/jpsgaiyo.71.1.0_1289

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  • High Temperature μSR Experiments for Accelerator Developments Reviewed

    Chihiro Ohmori, Akihiro Koda, Yasuhiro Miyake, Kusuo Nishiyama, Koichiro Shimomura, Alexander Schnase, Eiji Ezura, Keigo Hara, Katsushi Hasegawa, Masahiro Nomura, Taihei Shimada, Koji Takata, Fumihiko Tamura, Makoto Toda, Masanobu Yamamoto, Masahito Yoshii

    Proceedings of the 2nd International Symposium on Science at J-PARC — Unlocking the Mysteries of Life, Matter and the Universe —   2015.9

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    DOI: 10.7566/jpscp.8.012025

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  • Development of muon rotating target at J-PARC/MUSE

    Shunsuke Makimura, N. Kawamura, S. Onizawa, Y. Matsuzawa, M. Tabe, Y. Kobayashi, R. Shimizu, Y. Taniguchi, H. Fujimori, Y. Ikedo, R. Kadono, A. Koda, K. M. Kojima, K. Nishiyama, J. Nakamura, K. Shimomura, P. Strasser, Y. Nakatsugawa, Y. Miyake

    JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY   305 ( 3 )   811 - 815   2015.9

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    DOI: 10.1007/s10967-015-3949-0

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  • Precision Measurement of Muonium Hyperfine Splitting at J-PARC and Integrated Detector System for High-Intensity Pulsed Muon Beam Experiment Reviewed

    S. Kanda, M. Aoki, Y. Fukao, Y. Higashi, T. Higuchi, H. Iinuma, Y. Ikedo, K. Ishida, M. Iwasaki, R. Kadono, O. Kamigaito, D. Kawall, N. Kawamura, A. Koda, K. M. Kojima, K. Kubo, Y. Matsuda, T. Mibe, Y. Miyake, T. Mizutani, K. Nagamine, K. Nishiyama, T. Ogitsu, R. Okubo, N. Saito, K. Sasaki, K. Shimomura, P. Strasser, M. Sugano, M. Tajima, K. S. Tanaka, D. Tomono, H. A. Torii, E. Torikai, A. Toyoda, K. Ueno, Y. Ueno, M. Yoshida, A. Yamamoto

    JPS Conf. Proc.   8   025006 - [6 pages]   2015.9

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    DOI: 10.7566/JPSCP.8.025006

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  • Present Status of Muon Production Target at J-PARC/MUSE Reviewed

    Shunsuke Makimura, Naritoshi Kawamura, Satoshi Onizawa, Yukihiro Matsuzawa, Masato Tabe, Yasuo Kobayashi, Ryo Shimizu, Hiroshi Fujimori, Yutaka Ikedo, Ryosuke Kadono, Akihiro Koda, Kenji M. Kojima, Kusuo Nishiyama, Jumpei Nakamura, Koichiro Shimomura, Patrick Strasser, Masaharu Aoki, Yohei Nakatsugawa, Yasuhiro Miyake

    JPS Conf. Proc.   8   051002 - [8 pages]   2015.9

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    DOI: 10.7566/JPSCP.8.051002

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  • Electronic structure of Mu-complex donor state in rutile TiO2 Reviewed

    K. Shimomura, R. Kadono, A. Koda, K. Nishiyama, M. Mihara

    Physical Review B - Condensed Matter and Materials Physics   92 ( 7 )   2015.8

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    DOI: 10.1103/PhysRevB.92.075203

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  • Structural anomalies and short-range magnetic correlations in the orbitally degenerate system Sr2VO4 Reviewed

    Yamauchi, I., Nawa, K., Hiraishi, M., Miyazaki, M., Koda, A., Kojima, K.M., Kadono, R., Nakao, H., Kumai, R., Murakami, Y., Ueda, H., Yoshimura, K., Takigawa, M.

    Physical Review B - Condensed Matter and Materials Physics   92 ( 6 )   2015.8

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    DOI: 10.1103/PhysRevB.92.064408

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  • Status of the New Muonium HFS Experiment at J-PARC/MUSE Reviewed

    P. Strasser, M. Aoki, Y. Fukao, Y. Higashi, T. Higuchi, H. Iinuma, Y. Ikedo, K. Ishida, M. Iwasaki, R. Kadono, O. Kamigaito, S. Kanda, D. Kawall, N. Kawamura, A. Koda, K. M. Kojima, K. Kubo, Y. Matsuda, T. Mibe, Y. Miyake, T. Mizutani, K. Nagamine, K. Nishiyama, T. Ogitsu, R. Okubo, N. Saito, K. Sasaki, K. Shimomura, M. Sugano, M. Tajima, K. S. Tanaka, D. Tomono, H. A. Torii, E. Torikai, A. Toyoda, K. Ueno, Y. Ueno, A. Yamamoto, M. Yoshida

    PoS(NUFACT2014)   226   094 - [8 pages]   2015.7

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  • 22pAR-2 Dynamics of polybutadiene probed by muon spin relaxation

    Takeshita S., Okabe H., Hiraishi M., Kojima K. M., Miyazaki M., Yamauchi I., Koda A., Kadono R., Seto H., Masui T., Wakabayashi N.

    Meeting Abstracts of the Physical Society of Japan   70   3301 - 3301   2015

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  • 24aCJ-6 Progress on the construction of the surface muon beamline "S-Line" at J-PARC MUSE: II

    Koda A., Strasser P., Kawamura N., Nishiyama K., Fujimori H., Kobayashi Y., Shimomura K., Miyazaki N., Yamauchi I., Okabe H., Kojima K. M., Kadono R., Miyake Y., Ito T. U., Higemoto W.

    Meeting Abstracts of the Physical Society of Japan   70   2797 - 2797   2015

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    DOI: 10.11316/jpsgaiyo.70.1.0_2797

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  • 22aAH-8 μSR study of triangular-lattice antiferromagnet β'-LiCoPO_4

    Okabe H., Miyazaki M., Hiraishi M., Yamauchi I., Takeshita S., Koda A., Kojima K. M., Kadono R., Yoshida H., Miyakawa M., Matsushita Y.

    Meeting Abstracts of the Physical Society of Japan   70   1157 - 1157   2015

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    DOI: 10.11316/jpsgaiyo.70.1.0_1157

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  • 21aBE-12 Magnetic ground state of YMn_2Zn_<20-x>In_x probed by the muon Knight shift

    Miyazaki M., Kadono R, Hiraishi M., Yamauchi I., Koda A., Kojima K. M., Okamoto Y., Hiroi Z.

    Meeting Abstracts of the Physical Society of Japan   70   1986 - 1986   2015

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    DOI: 10.11316/jpsgaiyo.70.1.0_1986

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  • 22aBC-10 Evidence for magnetic moments at apical oxygen sites in antiferromagnetic Sr_2IrO_4 and Sr_3Ir_2O_7

    Miyazaki M., Kadono R., Hiraishi M., Koda A., Kojima K. M., Ohashi K., Takayama T., Takagi H.

    Meeting Abstracts of the Physical Society of Japan   70   2076 - 2076   2015

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  • 23pBD-3 Magnetism and superconductivity in non-doped T'-phase cuprates probed by low energy muuon

    Kojima K. M., Krockenberger Y., Yamauchi I., Miyazaki M., Hiraishi M., Koda A., Kadono R., Kumai R., Yamamoto H., Ikeda A., Naito M.

    Meeting Abstracts of the Physical Society of Japan   70   2303 - 2304   2015

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    DOI: 10.11316/jpsgaiyo.70.1.0_2303

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  • 21pBD-4 Unconventional magnetic ground state and spin-orbital interaction of Iridium spinel (Cu_<1-x>,Zn_x)Ir_2S_4

    Kojima K. M., Kadono R., Miyazaki M., Hiraishi M., Yamauchi I., Koda A., Tsuchiya Y., Suzuki S., Kitazawa H.

    Meeting Abstracts of the Physical Society of Japan   70   2033 - 2034   2015

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    DOI: 10.11316/jpsgaiyo.70.1.0_2033

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  • 21aBE-11 Muon Knight shift measurements on the heavy fermion rf-electron system Y_<1-x>Sc_xMn_2

    Yamauchi I., Miyazaki M., Hiraishi M., Okabe H., Takeshita S., Koda A., Kojima K. M., Kadono R., Nakamura H.

    Meeting Abstracts of the Physical Society of Japan   70   1985 - 1985   2015

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  • Evidence for ordered magnetic moments at oxygen sites in antiferromagnetic Sr2IrO4 and Sr3Ir2O7 Reviewed

    Miyazaki, M., Kadono, R., Hiraishi, M., Koda, A., Kojima, K.M., Ohashi, K., Takayama, T., Takagi, H.

    Physical Review B - Condensed Matter and Materials Physics   91 ( 15 )   155113   2015

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    DOI: 10.1103/PhysRevB.91.155113

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  • 22aDE-2 Installation of Rotating Target at J-PARC/MLF/MUSE

    Makimura S., Kawamura N., Kobayashi Y., Ikedo Y., Kadono R., Koda A., Kojima K. M., Shimomura K., Strasser P., Nakatsugawa Y., Fujimori H., Miyake Y.

    Meeting Abstracts of the Physical Society of Japan   70   520 - 520   2015

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    DOI: 10.11316/jpsgaiyo.70.1.0_520

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  • 22aBA-2 Magnetic Ground State of SmFeAsO_<1-x>H_x probed by μSR

    Hiraishi M., Kojima K. M., Yamauchi I., Miyazaki M., Okabe H., Koda A., Kadono R., Okanishi H., Iimura S., Matsuishi S., Hosono H.

    Meeting Abstracts of the Physical Society of Japan   70   2056 - 2056   2015

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    DOI: 10.11316/jpsgaiyo.70.1.0_2056

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  • 24aCJ-10 μSR and MuSR measurement in solid water

    Kawauchi Taizo, Higemoto Wataru, Hamada Koji, Koda Akihiro, Miyazaki Masanori, Kojima Kenji M., Shimomura Koichiro, Miyake Yasuhiro, Fukutani Katsuyuki

    Meeting Abstracts of the Physical Society of Japan   70   2800 - 2800   2015

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    DOI: 10.11316/jpsgaiyo.70.1.0_2800

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  • 19aPS-77 Ground state of the orbitally degenerated system Sr_2VO_4 observed via synchrotron radiation x-ray diffraction and muon spin rotation/relaxation

    Yamauchi I., Nawa K., Hiraishi M., Miyazaki M., Koda A., Kojima K. M., Kadono R., Nakao H., Kumai R., Murakami Y., Ueda H., Yoshimura K., Takigawa M.

    Meeting Abstracts of the Physical Society of Japan   70   2168 - 2168   2015

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    DOI: 10.11316/jpsgaiyo.70.2.0_2168

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  • 17aCM-3 μSR study of triangular-lattice antiferromagnet β'-LiCoPO_4 II

    Okabe H., Hiraishi M., Yamauchi I., Takeshita S., Koda A., Kojima K. M., Kadono R., Yoshida H., Miyakawa M., Matsushita Y.

    Meeting Abstracts of the Physical Society of Japan   70   873 - 873   2015

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    DOI: 10.11316/jpsgaiyo.70.2.0_873

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  • 18aCT-9 Dynamics of polybutadiene probed by muon spin relaxation II

    Takeshita S., Okabe H., Hiraishi M., Kojima K. M., Yamauchi I., Koda A., Kadono R., Seto H., Masui T., Wakabayashi N.

    Meeting Abstracts of the Physical Society of Japan   70   2979 - 2979   2015

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    DOI: 10.11316/jpsgaiyo.70.2.0_2979

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  • 17pCL-5 Localized moment appearing in two dimensional electride Y_2C

    Kojima Kenji M., Hiraishi Masatoshi, Okabe Hirotaka, Koda Akihiro, Kadono Ryosuke, Zhang Xiao, Matsuishi Satoshi, Hosono Hideo

    Meeting Abstracts of the Physical Society of Japan   70   1404 - 1404   2015

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    DOI: 10.11316/jpsgaiyo.70.2.0_1404

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  • 18pDB-11 μSR study on superconducting property in highly hydrogen doped LaFeAsO_<1-x>H_x

    Hiraishi M., Kojima K. M., Yamauchi I., Okabe H., Takeshita S., Koda A., Kadono R., Iimura S., Matsuishi S., Hosono H.

    Meeting Abstracts of the Physical Society of Japan   70   2048 - 2048   2015

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    DOI: 10.11316/jpsgaiyo.70.2.0_2048

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  • Muonium in stishovite: Implications for the possible existence of neutral atomic hydrogen in the Earth’s deep mantle Reviewed

    N. Funamori, K. M. Kojima, D. Wakabayashi, T. Sato, T. Taniguchi, N. Nishiyama, T. Irifune, D. Tomono, T. Matsuzaki, M. Miyazaki, M. Hiraishi, A. Koda, R. Kadono

    Scientific Reports   5   8437   2015

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    DOI: 10.1038/srep08437

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  • Status and Prospects of the Muonium Experiment at J-PARC Reviewed

    H. A. TORII, K. S. TANAKA, M. TAJIMA, T. MIZUTANI, Y. MATSUDA, Y. FUKAO, H. IINUMA, Y. IKEDO, R. KADONO, N. KAWAMURA, A. KODA, K. KOJIMA, T. MIBE, Y. MIYAKE, K. NAGAMINE, K. NISHIYAMA, R. OHKUBO, T. OGITSU, N. SAITO, K. SASAKI, K. SHIMOMURA, P. STRASSER, M. SUGANO, A. TOYODA, K. UENO, A. YAMAMOTO, M. YOSHIDA, K. ISHIDA, M. IWASAKI, O. KAMIGAITO, S. KANDA, D. TOMONO, Y. UENO, K. KUBO, M. AOKI, E. TORIKAI, D. KAWALL

    International Journal of Modern Physics   35   1460435   2014.12

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    DOI: 10.1142/S2010194514604359

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  • Cooperative Order in the Weakly Magnetic Domain of LaFeAsO1-xFx near the Doping Phase Boundary Reviewed

    Hiraishi Masatoshi, Kadono Ryosuke, Miyazaki Masanori, Yamauchi Ichihiro, Koda Akihiro, Kojima Kenji M, Ishikado Motoyuki, Wakimoto Shuichi, Shamoto Shin-Ichi

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   83 ( 10 )   2014.10

  • Remote-controlled non-destructive measurement for thermal conductivity of highly radioactive isotropic graphite used as the muon production target at J-PARC/MUSE

    Shunsuke Makimura, Naritoshi Kawamura, Kenji M. Kojima, Akihiro Koda, Noriyuki Kurosawa, Ryo Shimizu, Patrick Strasser, Jumpei Nakamura, Yasuhiro Miyake

    JOURNAL OF NUCLEAR MATERIALS   450 ( 1-3 )   110 - 116   2014.7

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    DOI: 10.1016/j.jnucmat.2013.10.019

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  • Bulk superconductivity in undoped T '-La1.9Y0.1CuO4 probed by muon spin rotation Reviewed

    K. M. Kojima, Y. Krockenberger, I. Yamauchi, M. Miyazaki, M. Hiraishi, A. Koda, R. Kadono, R. Kumai, H. Yamamoto, A. Ikeda, M. Naito

    PHYSICAL REVIEW B   89 ( 18 )   2014.5

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    DOI: 10.1103/PhysRevB.89.180508

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  • Bipartite magnetic parent phases in the iron oxypnictide superconductor Reviewed

    M. Hiraishi, S. Iimura, K. M. Kojima, J. Yamaura, H. Hiraka, K. Ikeda, P. Miao, Y. Ishikawa, S. Torii, M. Miyazaki, I. Yamauchi, A. Koda, K. Ishii, M. Yoshida, J. Mizuki, R. Kadono, R. Kumai, T. Kamiyama, T. Otomo, Y. Murakami, S. Matsuishi, H. Hosono

    NATURE PHYSICS   10 ( 4 )   300 - 303   2014.4

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    DOI: 10.1038/NPHYS2906

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  • U-Line at MLF/J-PARC for Ultra Slow Muon Microscopy Reviewed

    Yutaka Ikedo, Yasuhiro Miyake, Koichiro Shimomura, Patrick Strasser, Naritoshi Kawamura, Kusuo Nishiyama, Shunsuke Makimura, Hiroshi Fujimori, Akihiro Koda, Jumpei Nakamura, Takashi Nagatomo, Yasuo Kobayashi, Taihei Adachi, Amba Datt Pant, Toru Ogitsu, Tatsushi Nakamoto, Kenichi Sasaki, Hirokatsu Ohhata, Ryutaro Okada, Akira Yamamoto, Yasuhiro Makida, Makoto Yoshida, Takahiro Okamura, Ryuji Ohkubo, Wataru Higemoto, Takashi U. Ito, Kazutaka Nakahara, Kazuhiko Ishida

    JPS Conf. Proc.   2   010103 - [4 pages]   2014.3

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    DOI: 10.7566/JPSCP.2.010103

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  • Transport of Coherent VUV Radiation to Muon U-Line for Ultra Slow Muon Microscope Reviewed

    Jumpei Nakamura, Yu Oishi, Norihito Saito, Koji Miyazaki, Koji Yokoyama, Kotaro Okamura, Shunsuke Makimura, Yasuhiro Miyake, Takashi Nagatomo, Patrick Strasser, Yutaka Ikedo, Dai Tomono, Koichiro Shimomura, Satoshi Wada, Naritoshi Kawamura, Akihiro Koda, Kusuo Nishiyama

    JPS Conf. Proc.   2   010108 - [7 pages]   2014.3

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    DOI: 10.7566/JPSCP.2.010108

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  • Construction of Ultra Slow Muon Beam Line at J-PARC Reviewed

    T. Nagatomo, Y. Ikedo, P. Strasser, S. Makimura, J. Nakamura, K. Nishiyama, K. Shimomura, N. Kawamura, A. Koda, H. Fujimori, Y. Kobayashi, T. U. Ito, W. Higemoto, A. D. Pant, R. Kadono, E. Torikai, Y. Miyake

    JPS Conf. Proc.   2   010102 - [5 pages]   2014.3

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    DOI: 10.7566/JPSCP.2.010102

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  • Ultra Slow Muon Project at J-PARC MUSE Reviewed

    Yasuhiro Miyake, Yutaka Ikedo, Koichiro Shimomura, Patrick Strasser, Nagatomo Takashi, Jumpei Nakamura, Shunsuke Makimura, Naritoshi Kawamura, Hiroshi Fujimori, Akihiro Koda, Yasuo Kobayashi, Kusuo Nishiyama, Ryosuke Kadono, Wataru Higemoto, Takashi Ito, Toru Ogitsu, Yasuhiro Makida, Kenichi Sasaki, Taihei Adachi, Eiko Torikai

    JPS Conf. Proc.   2   010101 - [6 pages]   2014.3

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    DOI: 10.7566/JPSCP.2.010101

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  • Magnetic Frustration in Iridium Spinel Compound CuIr2S4 Reviewed

    K. M. Kojima, R. Kadono, M. Miyazaki, M. Hiraishi, I. Yamauchi, A. Koda, Y. Tsuchiya, H. S. Suzuki, H. Kitazawa

    PHYSICAL REVIEW LETTERS   112 ( 8 )   2014.2

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    DOI: 10.1103/PhysRevLett.112.087203

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  • Ultra Slow Muon Microscope at MUSE/J-PARC Reviewed

    J. Nakamura, T. Nagatomo, Y. Oishi, Y. Ikedo, P. Strasser, N. Saito, K. Miyazaki, K. Yokoyama, K. Okamura, Y. Miyake, S. Makimura, K. Nishiyama, K. Shimomura, N. Kawamura, A. Koda, W. Higemoto, S. Wada, M. Iwasaki, E. Torikai

    1ST CONFERENCE ON LIGHT AND PARTICLE BEAMS IN MATERIALS SCIENCE 2013 (LPBMS2013)   502   012042   2014

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    DOI: 10.1088/1742-6596/502/1/012042

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  • In situ mu+SR measurements on the hydrogen desorption reaction of magnesium hydride Reviewed

    I. Umegaki, H. Nozaki, M. Harada, Y. Higuchi, T. Noritake, M. Matsumoto, S-i Towata, E. J. Ansaldo, J. H. Brewer, A. Koda, Y. Miyake, J. Sugiyama

    13TH INTERNATIONAL CONFERENCE ON MUON SPIN ROTATION, RELAXATION AND RESONANCE   551 ( 1 )   2014

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    DOI: 10.1088/1742-6596/551/1/012036

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  • Bipartite magnetic parent phases in the iron oxypnictide superconductor Reviewed

    Hiraishi, M., Iimura, S., Kojima, K.M., Yamaura, J., Hiraka, H., Ikeda, K., Miao, P., Ishikawa, Y., Torii, S., Miyazaki, M., Yamauchi, I., Koda, A., Ishii, K., Yoshida, M., Mizuki, J., Kadono, R., Kumai, R., Kamiyama, T., Otomo, T., Murakami, Y., Matsuishi, S., Hosono, H.

    Nature Physics   10 ( 4 )   2014

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    DOI: 10.1038/nphys2906

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  • New mu SR spectrometer at J-PARC MUSE based on Kalliope detectors Reviewed

    K. M. Kojima, T. Murakami, Y. Takahashi, H. Lee, S. Y. Suzuki, A. Koda, I. Yamauchi, M. Miyazaki, M. Hiraishi, H. Okabe, S. Takeshita, R. Kadona, T. Ito, W. Higemoto, S. Kanada, Y. Fukao, N. Saito, M. Saito, M. Ikeno, T. Uchida, M. M. Tanaka

    13TH INTERNATIONAL CONFERENCE ON MUON SPIN ROTATION, RELAXATION AND RESONANCE   551 ( 1 )   2014

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    DOI: 10.1088/1742-6596/551/1/012063

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  • Performance of a Superconducting Magnet System Operated in the Super Omega Muon Beam Line at J-PARC Reviewed

    Yasuhiro Makida, Yutaka Ikedo, Toru Ogitsu, Koichiro Shimomura, Yasuhiro Miyake, Makoto Yoshida, Taihei Adachi, Ryosuke Kadono, Naritoshi Kawamura, Patric Strasser, Akihiro Koda, Hiroshi Fujimori, Kusuo Nishiyama, Hirokatsu Ohhata, Takahiro Okamura, Ryutaro Okada, Tomofumi Orikasa

    ADVANCES IN CRYOGENIC ENGINEERING   1573   438 - 447   2014

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    DOI: 10.1063/1.4860734

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  • Design and construction of the ultra-slow muon beamline at J-PARC/MUSE Reviewed

    P. Strasser, Y. Ikedo, S. Makimura, J. Nakamura, K. Nishiyama, K. Shimomura, H. Fujimori, T. Adachi, A. Koda, N. Kawamura, Y. Kobayashi, W. Higemoto, T. U. Ito, T. Nagatomo, E. Torikai, R. Kadono, Y. Miyake

    13TH INTERNATIONAL CONFERENCE ON MUON SPIN ROTATION, RELAXATION AND RESONANCE   551 ( 1 )   2014

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    DOI: 10.1088/1742-6596/551/1/012065

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  • Current status of the J-PARC muon facility, MUSE Reviewed

    Y. Miyake, K. Shimomura, N. Kawamura, P. Strasser, A. Koda, H. Fujimori, Y. Ikedo, S. Makimura, Y. Kobayashi, J. Nakamura, K. Kojima, T. Adachi, R. Kadono, S. Takeshita, K. Nishiyama, W. Higemoto, T. Ito, K. Nagamine, H. Ohata, Y. Makida, M. Yoshida, T. Okamura, R. Okada, T. Ogitsu

    13TH INTERNATIONAL CONFERENCE ON MUON SPIN ROTATION, RELAXATION AND RESONANCE   551 ( 1 )   2014

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    DOI: 10.1088/1742-6596/551/1/012061

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  • Spin dynamics of Mn pyrochlore lattice in YMn2Zn20-xInx Reviewed

    M. Miyazaki, R. Kadono, M. Hiraishi, I. Yamauchi, A. Koda, K. M. Kojima, I. Kawasaki, I. Watanabe, Y. Okamoto, Z. Hiroi

    13TH INTERNATIONAL CONFERENCE ON MUON SPIN ROTATION, RELAXATION AND RESONANCE   551   2014

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    DOI: 10.1088/1742-6596/551/1/012019

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  • 7aPS-100 Magnetic structure and Na-ion diffusion of Olivine-type Na_<0,7>FePO_4 Reviewed

    Umegaki I, Sugiyama J., Koda A., Nozaki H., Harada M., Higuchi Y., Miyake Y., Kobayashi G., Kanno R., Ansaldo E. J., Brewer J. H.

    Meeting Abstracts of the Physical Society of Japan   69 ( 0 )   255 - 255   2014

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    DOI: 10.11316/jpsgaiyo.69.2.3.0_255_1

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  • Optimal crossed overlap of coherent vacuum ultraviolet radiation and thermal muonium emission for μsR with the Ultra Slow Muon

    Nakamura, J., Oishi, Y., Saito, N., Miyazaki, K., Okamura, K., Higemoto, W., Ikedo, Y., Kojima, K.M., Strasser, P., Nagatomo, T., Makimura, S., Miyake, Y., Kawamura, N., Yokoyama, K., Tomono, D., Shimomura, K., Wada, S., Koda, A., Kobayashi, Y., Fujimori, H., Kadono, R., Nishiyama, K.

    Journal of Physics: Conference Series   551 ( 1 )   2014

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    DOI: 10.1088/1742-6596/551/1/012066

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  • Muon Knight shift in d-electron heavy fermion compound Y0.95SC0.05Mn2 Reviewed

    I. Yamauchi, M. Miyazaki, M. Hiraishi, A. Koda, K. M. Kojima, R. Kadono, H. Nakamura

    13TH INTERNATIONAL CONFERENCE ON MUON SPIN ROTATION, RELAXATION AND RESONANCE   551   2014

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    DOI: 10.1088/1742-6596/551/1/012002

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  • Superconducting curved transport solenoid with dipole coils for charge selection of the muon beam Reviewed

    P. Strasser, Y. Ikedo, Y. Miyake, K. Shimomura, N. Kawamura, K. Nishiyama, S. Makimura, H. Fujimori, A. Koda, J. Nakamura, T. Nagatomo, T. Adachi, A. D. Pant, T. Ogitsu, Y. Makida, M. Yoshida, K. Sasaki, T. Okamura, H. Ohhata, T. Nakamoto, R. Okada, R. Ohkubo, A. Yamamoto, W. Higemoto, T. U. Itoh, K. Ishida, K. Nakahara

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   317   361 - 364   2013.12

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    DOI: 10.1016/j.nimb.2013.07.046

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  • Shallow donor level associated with hydrogen impurities in undoped BaTiO<inf>3</inf>

    Ito, T., Higemoto, W., Matsuda, T.D., Koda, A., Shimomura, K.

    Applied Physics Letters   103 ( 4 )   2013.7

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    DOI: 10.1063/1.4812348

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  • Development of Kalliope positron detectors for upgrade of μSR Spectrometers at J-PARC/MLF

    Kojima K.M, Murakami T., Kanda S., Takahashi Y., Fukao Y., Suzuki S.Y, Koda A., Miyazaki M., Hiraishi M., Kadono R., Saito N., Ikeno M., Saito M., Uchida T., Tanaka M

    Meeting Abstracts of the Physical Society of Japan   68.2.4   875   2013

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    DOI: 10.11316/jpsgaiyo.68.2.4.0_875_2

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  • Ultra slow muon microscopy by laser resonant ionization at J-PARC, MUSE Reviewed

    Miyake Y, Ikedo Y, Shimomura K, Strasser P, Kawamura N, Nishiyama K, Koda A, Fujimori H, Makimura S, Nakamura J, Nagatomo T, Kadono R, Torikai E, Iwasaki M, Wada S, Saito N, Okamura K, Yokoyama K, Ito T, Higemoto W

    Hyperfine Interactions   216 ( 1-3 )   79 - 83   2013

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    DOI: 10.1007/s10751-012-0759-4

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  • Positron separators in Superomega muon beamline at J-PARC Reviewed

    Ikedo Y, Miyake Y, Shimomura K, Strasser P, Kawamura N, Nishiyama K, Makimura S, Fujimori H, Koda A, Nakamura J, Nagatomo T, Kobayashi Y, Adachi T, Pant A.D, Ogitsu T, Nakamoto T, Sasaki K, Ohata H, Okada R, Yamamoto A, Makida Y, Yoshida M, Okamura T, Okubo R, Higemoto W, Ito T.U, Nakahara K, Ishida K

    Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms   317   365 - 368   2013

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    DOI: 10.1016/j.nimb.2013.07.060

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  • mu SR investigation of magnetically ordered states in the A-site ordered perovskite manganites RBaMn2O6 (R = Y and La) Reviewed

    Y. Kawasaki, T. Minami, M. Izumi, Y. Kishimoto, T. Ohno, K. H. Satoh, A. Koda, R. Kadono, J. L. Gavilano, H. Luetkens, T. Nakajima, Y. Ueda

    PHYSICAL REVIEW B   86 ( 12 )   2012.9

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    DOI: 10.1103/PhysRevB.86.125141

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  • Development of a Muon Rotating Target for J-PARC/MUSE Reviewed

    Shunsuke Makimura, Yasuo Kobayashi, Yasuhiro Miyake, Naritoshi Kawamura, Patrick Strasser, Akihiro Koda, Koichiro Shimomura, Hiroshi Fujimori, Kusuo Nishiyama, Mineo Kato, Kenji Kojima, Wataru Higemoto, Takashi Ito, Ryou Shimizu, Ryosuke Kadono

    Physics Procedia   32   795 - 801   2012.6

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    DOI: 10.1016/j.phpro.2012.03.638

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  • 20aAH-6 Hydrogen state in BaTiO_3 Hydrides Probed by μSR Reviewed

    Ito T. U., Higemoto W., Koda A., Shimomura K., Nishiyama K., Matsuzaki T., Tomono D., Kobayashi Y., Sakaguchi T., Kageyama H.

    Meeting abstracts of the Physical Society of Japan   67 ( 2 )   870 - 870   2012.1

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  • Quasi-one-dimensional spin dynamics in LiV <inf>2</inf>O <inf>4</inf>: One-to-three-dimensional crossover as a possible origin of heavy fermion state Reviewed

    Kadono R, Koda A, Higemoto W, Ohishi K, Ueda H, Urano C, Kondo S.-I, Nohara M, Takagi H

    Journal of the Physical Society of Japan   81 ( 1 )   2012.1

  • Magnetic ordering in spin-orbit Mott insulator Ba2IrO4 probed by mu SR Reviewed

    H. Okabe, M. Isobe, E. Takayama-Muromachi, A. Koda, S. Takeshita, M. Hiraishi, M. Miyazaki, R. Kadono, Y. Miyake, J. Akimitsu

    26TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT26), PTS 1-5   400 ( PART 3 )   2012

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    DOI: 10.1088/1742-6596/400/3/032071

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  • New Muon Kicker System for the Decay Muon Beamline at J-PARC Reviewed

    Strasser P, Fujimori H, Koseki K, Hori Y, Matsumoto H, Shimomura K, Koda A, Kawamura N, Makimura S, Kato M, Kobayashi Y, Higemoto W, Ito T.U, Ninomiya K, Kojima K, Kadono R, Nishiyama K, Miyake Y

    Physics Procedia   30   65 - 68   2012

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    DOI: 10.1016/j.phpro.2012.04.041

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  • J-PARC Muon Facility, MUSE Reviewed

    Miyake Y, Shimomura K, Kawamura N, Strasser P, Koda A, Makimura S, Fujimori H, Ikedo Y, Nakahara K, Takeshita S, Kato M, Kojima K, Kobayashi Y, Nishiyama K, Kadono R, Higemoto W, Ito T.U, Ninomiya K, Kubo K, Nagamine K

    Physics Procedia   30   46 - 49   2012

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    DOI: 10.1016/j.phpro.2012.04.037

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  • Spin-Orbit Mott State in the Novel Quasi-2D Antiferromagnet Ba2IrO4 Reviewed

    M. Isobe, H. Okabe, E. Takayama-Muromachi, A. Koda, S. Takeshita, M. Hiraishi, M. Miyazaki, R. Kadono, Y. Miyake, J. Akimitsu

    26TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT26), PTS 1-5   400 ( PART 3 )   2012

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    DOI: 10.1088/1742-6596/400/3/032028

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  • Status of the Superomega muon beam line at J-PARC Reviewed

    Ikedo Yutaka, Miyake Yasuhiro, Shimomura Koichiro, Strasser Patrick, Nishiyama Kusuo, Kawamura Naritoshi, Fujimoria Hiroshi, Makimura Shunsuke, Koda Akihiro, Ogitsu Toru, Makida Yasuhiro, Adachi Taihei, Nakahara Kazutaka, Yoshida Makoto, Yamamoto Akira, Nakamoto Tatsushi, Sasaki Kenichi, Tanaka Kenichi, Kimura Nobuhiro, Higemoto Wataru, Ajima Yasuo, Ishida Katsuhiko, Matsuda Yasuyuki, Sato Akira

    12TH INTERNATIONAL CONFERENCE ON MUON SPIN ROTATION, RELAXATION AND RESONANCE (MUSR2011)   30   34 - 37   2012

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    DOI: 10.1016/j.phpro.2012.04.034

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  • mu SR study of A-site ordered perovskite manganite LaBaMn2O6 Reviewed

    Yu Kawasaki, Takeshi Minami, Yutaka Kishimoto, Takashi Ohno, Kohki H. Satoh, Akihiro Koda, Ryosuke Kadono, Tomohiko Nakajima, Yutaka Ueda

    INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS (SCES 2011)   391   2012

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    DOI: 10.1088/1742-6596/391/1/012096

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  • Magnetic ground state of the frustrated honeycomb lattice antiferromagnet Bi <inf>3</inf>Mn <inf>4</inf>O <inf>12</inf>(NO <inf>3</inf>) Reviewed

    Onishi, N., Oka, K., Azuma, M., Shimakawa, Y., Motome, Y., Taniguchi, T., Hiraishi, M., Miyazaki, M., Masuda, T., Koda, A., Kojima, K.M., Kadono, R.

    Physical Review B - Condensed Matter and Materials Physics   85 ( 18 )   1 - 6   2012

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    DOI: 10.1103/PhysRevB.85.184412

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  • Conceptual Design of a Superconducting Solenoid System for the Super Omega Muon Beam Line at J-PARC Reviewed

    Yasuhiro Makida, Yutaka Ikedo, Toru Ogitsu, Taihei Adachi, Koichiro Shimomura, Yasuhiro Miyake, Naritoshi Kawamura, Patrick Strasser, Akihiro Koda, Kazutaka Nakahara, Tatsushi Nakamoto, Takahiro Okamura, Ken-ichi Sasaki, Makoto Yoshida

    IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY   21 ( 3 )   1725 - 1729   2011.6

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    DOI: 10.1109/TASC.2010.2089405

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  • Quasi-One-Dimensional Spin Dynamics in d-Electron Heavy-Fermion Metal Y1-xScxMn2 Reviewed

    Masanori Miyazaki, Ryosuke Kadono, Masatoshi Hiraishi, Tetsuya Masuda, Akihiro Koda, Kenji M. Kojima, Teruo Yamazaki, Yoshikazu Tabata, Hiroyuki Nakamura

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   80 ( 6 )   063707/1 - 4   2011.6

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    DOI: 10.1143/JPSJ.80.063707

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  • Ba2IrO4: A spin-orbit Mott insulating quasi-two-dimensional antiferromagnet Reviewed

    H. Okabe, M. Isobe, E. Takayama-Muromachi, A. Koda, S. Takeshita, M. Hiraishi, M. Miyazaki, R. Kadono, Y. Miyake, J. Akimitsu

    PHYSICAL REVIEW B   83 ( 15 )   2011.4

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    DOI: 10.1103/PhysRevB.83.155118

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  • The Status of the Superomega Muon Beamline Reviewed

    Ikedo Y, Miyake Y, Shimomura K, Strasser P, Nishiyama K, Kawamura N, Fujimori H, Makimura S, Koda A, Nakahara K, Ogitsu T, Makida Y, Adachi T, Yoshida M, Yamamoto A, Nakamoto T, Sasaki K, Tanaka K, Kimura N, Higemoto W, Ajima Y, Ishida K, Matsuda Y, Sato A

    12TH INTERNATIONAL WORKSHOP ON NEUTRINO FACTORIES, SUPERBEAMS, AND BETABEAMS (NUFACT)   1382   2011

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    DOI: 10.1063/1.3644317

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  • Strongest Pulsed Muon Source at J-PARC MUSE Reviewed

    Y. Miyake, K. Shimomura, N. Kawamura, P. Strasser, A. Koda, H. Fujimori, S. Makimura, K. Nakahara, M. Kato, S. Takeshita, K. Nishiyama, Y. Kobayashi, K. Kojima, R. Kadono, W. Higemoto, T. Ito, K. Ninomiya, M. Hiraishi, M. Miyazaki, K. Kubo

    12TH INTERNATIONAL WORKSHOP ON NEUTRINO FACTORIES, SUPERBEAMS, AND BETABEAMS (NUFACT)   1382   217 - 219   2011

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    DOI: 10.1063/1.3644316

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  • Suppression of time-reversal symmetry breaking superconductivity in Pr(Os<inf>1-x</inf>Ru<inf>x</inf>)<inf>4</inf>Sb<inf>12</inf> and Pr <inf>1-y</inf>La<inf>y</inf>Os<inf>4</inf>Sb<inf>12</inf> Reviewed

    Shu, L., Higemoto, W., Aoki, Y., Hillier, A.D., Ohishi, K., Ishida, K., Kadono, R., Koda, A., Bernal, O.O., MacLaughlin, D.E., Tunashima, Y., Yonezawa, Y., Sanada, S., Kikuchi, D., Sato, H., Sugawara, H., Ito, T., Maple, M.

    Physical Review B - Condensed Matter and Materials Physics   83 ( 10 )   2011

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    DOI: 10.1103/PhysRevB.83.100504

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  • Ultra slow muon microscopy for nano-science

    Y. Miyake, N. Nishida, J. Yoshino, W. Higemoto, E. Torikai, K. Shimomura, Y. Ikedo, N. Kawamura, P. Strasser, S. Makimura, H. Fujimori, K. Nakahara, A. Koda, Y. Kobayashi, K. Nishiyama, R. Kadono, T. Ogitsu, Y. Makida, K. Sasaki, T. Adachi, K. Nagamine

    Journal of Physics: Conference Series   302 ( 1 )   2011

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    DOI: 10.1088/1742-6596/302/1/012038

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  • Muon Beam Line at J-PARC MUSE : Reuse of a 30-year-old Superconducting Magnet

    SHIMOMURA Koichiro, KODA Akihiro, NISHIYAMA Kusuo

    TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)   45 ( 4 )   174 - 180   2010.4

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    The Muon Science Laboratory at the Materials and Life Science Experimental Facility at J-PARC is now operating stably. In the first stage, a conventional superconducting muon channel was installed, which can extract low-energy positive muons (30 MeV/c) and medium-energy positive (or negative) muons up to 120 MeV/c. The established muon yield is several 107/s for 60 MeV/c (both positive and negative muons) at a proton beam power of 1 MW. This channel is used for various experiments such as muon spin spectroscopy, muon-catalyzed fusion and nondestructive elemental analysis. The superconducting solenoid is the key element of this beam line. We briefly present the construction and operation of this solenoid and cryogenics.

    DOI: 10.2221/jcsj.45.174

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  • J-PARC muon facility, MUSE

    Y Miyake, K Shimomura, N Kawamura, P Strasser, S Makimura, A Koda, H Fujimori, K Nakahara, S Takeshita, Y Kobayashi, K Nishiyama, W Higemoto, T U Ito, K Ninomiya, M Kato, R Kadono, N Sato, K Nagamine

    Journal of Physics: Conference Series   225   012036 - 012036   2010.4

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    DOI: 10.1088/1742-6596/225/1/012036

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  • J-PARC decay muon channel construction status Reviewed

    Strasser P, Shimomura K, Koda A, Kawamura N, Fujimori H, Makimura S, Kobayashi Y, Nakahara K, Kato M, Takeshita S, Hiraishi M, Miyazaki M, Higemoto W, Ito T.U, Ninomiya K, Ishida K, Kubo M.K, Kadono R, Nishiyama K, Miyake Y

    Journal of Physics: Conference Series   225   012050 - 012050   2010

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    DOI: 10.1088/1742-6596/225/1/012050

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  • Unconventional superconductivity in Li-intercalated layered nitride Li <inf>x</inf>ZrNCl Reviewed

    Hiraishi, M., Kadono, R., Miyazaki, M., Takeshita, S., Koda, A., Taguchi, Y., Kasahara, Y., Takano, T., Kishiume, T., Iwasa, Y.

    Physica C: Superconductivity and its Applications   470 ( SUPPL.1 )   2010

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    DOI: 10.1016/j.physc.2009.10.130

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  • Magnetic ground state of pyrochlore oxides close to metal-insulator boundary probed by muon spin rotation Reviewed

    Miyazaki, M., Kadono, R., Satoh, K.H., Hiraishi, M., Takeshita, S., Koda, A., Yamamoto, A., Takagi, H.

    Physical Review B - Condensed Matter and Materials Physics   82 ( 9 )   2010

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    DOI: 10.1103/PhysRevB.82.094413

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  • Muon Knight shift measurements in CeCoIn5 below 17 kOe Reviewed

    W. Higemoto, A. Koda, R. Kadono, K. Ohishi, Y. Haga, H. Shishido, R. Settai, Y. Onuki

    ADVANCED SCIENCE RESEARCH SYMPOSIUM 2009: POSITRON, MUON AND OTHER EXOTIC PARTICLE BEAMS FOR MATERIALS AND ATOMIC/MOLECULAR SCIENCES   225   2010

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    DOI: 10.1088/1742-6596/225/1/012013

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  • The Next Generation Muon Source at J-PARC/MLF Reviewed

    Nakahara K, Adachi T, Ikedo Y, Miyake Y, Shimomura K, Strasser P, Nishiyama K, Kawamura N, Fujimori H, Makimura S, Koda A, Nagamine K, Ogitsu T, Yamamoto A, Sasaki K, Tanaka K, Kimura N, Makida Y, Ajima Y, Ishida K, Matsuda Y

    NEUTRINO FACTORIES, SUPERBEAMS, AND BETA BEAMS   1222   420 - +   2010

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  • Muon Knight shift study of pseudogap state in underdoped (Bi,Pb)2201 Reviewed

    Miyazaki, M., Kadono, R., Hiraishi, M., Satoh, K.H., Takeshita, S., Koda, A., Fukunaga, Y., Tanabe, Y., Adachi, T., Koike, Y.

    Physica C: Superconductivity and its Applications   470 ( SUPPL.1 )   S55 - S56   2010

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    DOI: 10.1016/j.physc.2009.10.113

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  • Birth of an intense pulsed muon source, J-PARC MUSE Reviewed

    Miyake Yasuhiro, Shimomura Koichiro, Kawamura Naritoshi, Strasser Patrick, Makimura Shunsuke, Koda Akihiro, Fujimori Hiroshi, Nakahara Kazutaka, Kadono Ryosuke, Kato Mineo, Takeshita Soshi, Nishiyama Kusuo, Higemoto Wataru, Ishida Katsuhiko, Matsuzaki Teiichiro, Matsuda Yasuyuki, Nagamine Kanetada

    PHYSICA B-CONDENSED MATTER   404 ( 5-7 )   957 - 961   2009.4

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  • Effect of Zn substitution for Cu on Ca<inf>2 - x</inf> Na<inf>x</inf> CuO<inf>2</inf> Cl<inf>2</inf> near the hole concentration of frac(1, 8) per Cu

    Satoh, K.H., Hiraishi, M., Miyazaki, M., Takeshita, S., Koda, A., Kadono, R., Yamada, I., Oka, K., Azuma, M., Shimakawa, Y., Takano, M.

    Physica B: Condensed Matter   404 ( 5-7 )   713 - 716   2009.4

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    DOI: 10.1016/j.physb.2008.11.191

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  • Microscopic investigation of antiferromagnetic order in A-site-ordered perovskite manganite YBaMn2O6 Reviewed

    Y. Kawasaki, T. Minami, Y. Kishimoto, T. Ohno, A. Koda, K. H. Satoh, R. Kadono, J. L. Gavilano, H. Luetkens, T. Nakajima, Y. Ueda

    PHYSICA B-CONDENSED MATTER   404 ( 5-7 )   781 - 784   2009.4

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    DOI: 10.1016/j.physb.2008.11.174

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  • Development of positron detector for μSR based on multi-pixel photon counter Reviewed

    Takeshita, S., Hiraishi, M., Miyazaki, M., Koda, A., Kadono, R., Suzuki, S.Y., Yasu, Y., Tanaka, M., Matsuda, Y., Ishida, K., Matsuzaki, T.

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   600 ( 1 )   139 - 142   2009.2

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    DOI: 10.1016/j.nima.2008.11.108

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  • Superconducting muon channel at J-PARC

    K. Shimomura, A. Koda, P. Strasser, N. Kawamura, H. Fujimori, S. Makimura, W. Higemoto, K. Nakahara, K. Ishida, K. Nishiyama, K. Nagamine, Y. Miyake

    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   600 ( 1 )   192 - 194   2009.2

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    DOI: 10.1016/j.nima.2008.11.029

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  • Design strategy for devices under high radiation field in J-PARC muon facility

    Naritoshi Kawamura, Shunsuke Makimura, Patrick Strasser, Akihiro Koda, Hiroshi Fujimori, Kusuo Nishiyama, Yasuhiro Miyake, M.L.F Muon section

    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   600 ( 1 )   114 - 116   2009.2

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    DOI: 10.1016/j.nima.2008.11.073

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  • The super omega muon beamline at J-PARC Reviewed

    K. Nakahara, Y. Miyake, K. Shimomura, R. Strasser, K. Nishiyama, N. Kawamura, H. Fujimori, S. Makimura, A. Koda, K. Nagamine, T. Ogitsu, A. Yamamoto, T. Adachi, K. Sasaki, K. Tanaka, N. Kimura, Y. Makida, Y. Ajima, K. Ishida, Y. Matsuda

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   600 ( 1 )   132 - 134   2009.2

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    DOI: 10.1016/j.nima.2008.11.106

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  • Muon science in J-PARC Reviewed

    Kawamura N, Makimura S, Shimomura K, Strasser P, Koda A, Fujimori H, Nakahara K, Kato M, Takeshita S, Kadono R, Higemoto W, Nishiyama K, Nagamine K, Miyake Y

    Hyperfine Interactions   194 ( 1-3 )   213 - 217   2009

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    DOI: 10.1007/s10751-009-0074-x

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  • Erratum: Coexistence of Supercondcutivity and Magnetism in LaFeAs(O <inf>0.94</inf>F0.06) Probed by Muon Spin Relaxation (Journal of the Physical Society of Japan (2008) 77 (103703)) Reviewed

    Takeshita, S., Kadono, R., Hiraishi, M., Miyazaki, M., Koda, A., Kamihara, Y., Hosono, H.

    Journal of the Physical Society of Japan   78 ( 5 )   2009

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    DOI: 10.1143/JPSJ.78.058002

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  • Weak ferromagnetic ordering in the anomalous field-insensitive heavy-fermion state in SmOs4 Sb12 Reviewed

    Aoki, Y., Higemoto, W., Tsunashima, Y., Yonezawa, Y., Satoh, K.H., Koda, A., Ito, T., Ohishi, K., Heffner, R.H., Kikuchi, D., Sato, H.

    Physica B: Condensed Matter   404 ( 5-7 )   757 - 760   2009

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    DOI: 10.1016/j.physb.2008.11.180

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  • Novel features in filled skutterudites containing rare-earth elements with a plural number of 4f-electrons Reviewed

    Sato, H., Aoki, Y., Kikuchi, D., Sugawara, H., Higemoto, W., Ohishi, K., Ito, T.U., Heffner, R., Saha, S.R., Koda, A., Satoh, K.H., Nishiyama, K., Kadono, R., Nishida, N., Shu, L., MacLaughlin, D.E.

    Physica B: Condensed Matter   404 ( 5-7 )   749 - 753   2009

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    DOI: 10.1016/j.physb.2008.11.182

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  • Full gap superconductivity in Ba <inf>0:6</inf>K <inf>0:4</inf>Fe <inf>2</inf>As <inf>2</inf> probed by muon spin rotation Reviewed

    Hiraishi M, Kadono R, Takeshita S, Miyazaki M, Koda A, Okabe H, Akimitsu J

    Journal of the Physical Society of Japan   78 ( 2 )   23710 - 023710-4   2009

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    DOI: 10.1143/JPSJ.78.023710

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  • Development of a pipelined data acquisition system for μ SR experiments at J-PARC Reviewed

    Suzuki S.Y, Tanaka M, Tauchi K, Yasu Y, Takeshita S, Koda A, Hiraishi M, Miyazaki M, Satoh K, Kadono R, Ishida K, Tomono D, Matsuzaki T

    Physica B: Condensed Matter   404 ( 5-7 )   1002 - 1006   2009

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    DOI: 10.1016/j.physb.2008.11.220

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  • J-PARC muon source, MUSE Reviewed

    Miyake Y, Nishiyama K, Kawamura N, Strasser P, Makimura S, Koda A, Shimomura K, Fujimori H, Nakahara K, Kadono R, Kato M, Takeshita S, Higemoto W, Ishida K, Matsuzaki T, Matsuda Y, Nagamine K

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   600 ( 1 )   22 - 24   2009

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    DOI: 10.1016/j.nima.2008.11.016

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  • Insular superconductivity in a co-doped iron pnictide caFe1-xCoxAsF Reviewed

    Takeshita S, Kadono R, Hiraishi M, Miyazaki M, Koda A, Matsuishi S, Hosono H

    Physical Review Letters   103 ( 2 )   2009

  • New pipelined data acquisition system for μSR experiments at J-PARC Reviewed

    Suzuki S.Y, Tanaka M, Tauchi K, Uchida T, Koda A, Hiraishi M, Miyazaki M, Takeshita S, Satoh K, Kadono R, Matsuzaki T, Ishida K, Tomono D, Yasu Y, Higuchi T

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   600 ( 1 )   53 - 55   2009

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    DOI: 10.1016/j.nima.2008.11.089

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  • Magnetic ground-state of perovskite PbVO<inf>3</inf> with large tetragonal distortion Reviewed

    Oka, K., Yamada, I., Azuma, M., Takeshita, S., Satoh, K.H., Koda, A., Kadono, R., Takano, M., Shimakawa, Y.

    Inorganic Chemistry   47 ( 16 )   7355 - 7359   2008.8

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    DOI: 10.1021/ic800649a

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  • Fermi-liquid behavior and weakly anisotropic superconductivity in the electron-doped cuprate Sr1-xLaxCuO2 Reviewed

    Satoh Kohki H, Takeshita Soshi, Koda Akihiro, Kadono Ryosuke, Ishida Kenji, Pyon Sunsen, Sasagawa Takao, Takagi Hidenori

    PHYSICAL REVIEW B   77 ( 22 )   2008.6

  • Cu spin dynamics in the overdoped regime of La2-xSrxCu1-yZnyO4 probed by muon spin relaxation Reviewed

    Risdiana, T. Adachi, N. Oki, S. Yairi, Y. Tanabe, K. Omori, Y. Koike, T. Suzuki, I. Watanabe, A. Koda, W. Higemoto

    PHYSICAL REVIEW B   77 ( 5 )   054516   2008.2

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    DOI: 10.1103/PhysRevB.77.054516

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  • Design of the large acceptance Muon beamline at J-PARC Reviewed

    K. Nakahare, Y. Miyake, K. Shimomure, P. Strassee, K. Nishiyama, N. Kawamura, H. Fujimori, S. Makimura, A. Koda, K. Nagamine, T. Ogitsu, A. Yatnamoto, T. Adachi, K. Sasaki, K. Tanaka, Int. Kimura, Y. Makida, Y. E. E. Ajima, K. Ishida, Y. Matsuda

    NEUTRINO FACTORIES, SUPERBEAMS AND BETABEAMS   981   312 - +   2008

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  • Fermi-liquid behavior and weakly anisotropic superconductivity in the electron-doped cuprate Sr1-x Lax CuO2 Reviewed

    Satoh, K.H., Takeshita, S., Koda, A., Kadono, R., Ishida, K., Pyon, S., Sasagawa, T., Takagi, H.

    Physical Review B - Condensed Matter and Materials Physics   77 ( 22 )   2008

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    DOI: 10.1103/PhysRevB.77.224503

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  • Hydrogen bonding in sodium alanate: A muon spin rotation study Reviewed

    Kadono, R., Shimomura, K., Satoh, K.H., Takeshita, S., Koda, A., Nishiyama, K., Akiba, E., Ayabe, R.M., Kuba, M., Jensen, C.M.

    Physical Review Letters   100 ( 2 )   2008

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    DOI: 10.1103/PhysRevLett.100.026401

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  • Spin dynamics and spin freezing behavior in the two-dimensional antiferromagnet Ni Ga2 S4 revealed by Ga-NMR, NQR and μsR measurements Reviewed

    Takeya, H., Ishida, K., Kitagawa, K., Ihara, Y., Onuma, K., Maeno, Y., Nambu, Y., Nakatsuji, S., MacLaughlin, D.E., Koda, A., Kadono, R.

    Physical Review B - Condensed Matter and Materials Physics   77 ( 5 )   13 - 13   2008

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    DOI: 10.1103/PhysRevB.77.054429

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  • mu SR study of impurity effects on the Cu-spin fluctuations in the overdoped regime of La2-xSrxCu1-yZnyO4 Reviewed

    Risdiana, T. Adachi, N. Oki, S. Yairi, Y. Tanabe, K. Omori, T. Suzuki, I. Watanabe, A. Koda, W. Higemoto, Y. Koike

    PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS   460 ( 2 )   874 - 875   2007.9

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  • Anomalous magnetic phase in an undistorted pyrochlore oxide Cd2Os2O7 induced by geometrical frustration Reviewed

    Koda A, Kadono R, Ohishi K, Saha SR, Higemoto W, Yonezawa S, Muraoka Y, Hiroi Z

    Journal of the Physical Society of Japan   76 ( 6 )   63703 - 063703-4   2007.6

  • Antiferromagnetic ordering in Cu2OCl2 studied by the muon spin rotation/relaxation technique

    K. Kawashima, H. Okabe, K. Suzuki, S. Kuroiwa, J. Akimitsu, Kh Sato, A. Koda, R. Kadono

    JOURNAL OF PHYSICS-CONDENSED MATTER   19 ( 14 )   2007.4

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    DOI: 10.1088/0953-8984/19/14/145275

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  • Ferromagnetic correlation in the deuterated cobalt-oxyhydrate superconductor NaxCoO2 center dot yD(2)O probed by mu SR Reviewed

    K. H. Satoh, A. Koda, R. Kadono, H. Sakurai, K. Takada, T. Sasaki, E. Takayama-Muromachi

    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS   310 ( 2 )   E138 - E140   2007.3

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  • Microscopic properties of vortex states in Y B6 probed by muon spin rotation Reviewed

    Kadono, R., Kuroiwa, S., Akimitsu, J., Koda, A., Ohishi, K., Higemoto, W., Otani, S.

    Physical Review B - Condensed Matter and Materials Physics   76 ( 9 )   2007

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    DOI: 10.1103/PhysRevB.76.094501

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  • μ SR measurements on the vortex lattice of CaAlSi: Anisotropic response in magnetic penetration depth Reviewed

    Kuroiwa, S., Satoh, K.H., Koda, A., Kadono, R., Ohishi, K., Higemoto, W., Akimitsu, J.

    Journal of Physics and Chemistry of Solids   68 ( 11 )   2124 - 2128   2007

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    DOI: 10.1016/j.jpcs.2007.08.048

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  • Spin-triplet superconductivity in Pr Os4 Sb12 probed by muon Knight shift Reviewed

    Higemoto, W., Saha, S.R., Koda, A., Ohishi, K., Kadono, R., Aoki, Y., Sugawara, H., Sato, H.

    Physical Review B - Condensed Matter and Materials Physics   75 ( 2 )   2007

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    DOI: 10.1103/PhysRevB.75.020510

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  • Time reversal symmetry breaking in superconducting (Pr, La) Os<inf>4</inf> Sb<inf>12</inf> and Pr (Os, Ru)<inf>4</inf> Sb<inf>12</inf> Reviewed

    Shu, L., Higemoto, W., Aoki, Y., Frederick, N.A., Yuhasz, W.M., Heffner, R.H., Ohishi, K., Ishida, K., Kadono, R., Koda, A., Kikuchi, D., Sato, H., Sugawara, H., Ito, T., U, Sanada, S., Tunashima, Y., Yonezawa, Y., Maple, M.B., MacLaughlin, D.E.

    Journal of Magnetism and Magnetic Materials   310 ( 2 SUPPL. PART 1 )   551 - 553   2007

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    DOI: 10.1016/j.jmmm.2006.10.528

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  • Knight shift measurements in the superconducting state of Pr<inf>1 - x</inf> La<inf>x</inf> Os<inf>4</inf> Sb<inf>12</inf>(x = 0.4) probed by μ SR Reviewed

    Higemoto, W., Aoki, Y., Ohishi, K., Ito, T.U., Heffner, R.H., Saha, S.R., Koda, A., Satoh, K.H., Kadono, R., Kikuchi, D., Sugawara, H., Sato, H.

    Journal of Magnetism and Magnetic Materials   310 ( 2 SUPPL. PART 1 )   620 - 622   2007

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    DOI: 10.1016/j.jmmm.2006.10.291

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  • Muon spin relaxation and hyperfine-enhanced Pr141 nuclear spin dynamics in Pr (Os,Ru)4 Sb12 and (Pr,La) Os4 Sb12 Reviewed

    Shu, L., MacLaughlin, D.E., Aoki, Y., Tunashima, Y., Yonezawa, Y., Sanada, S., Kikuchi, D., Sato, H., Heffner, R.H., Higemoto, W., Ohishi, K., Ito, T.U., Bernal, O.O., Hillier, A.D., Kadono, R., Koda, A., Ishida, K., Sugawara, H., Frederick, N.A., Yuhasz, W.M., Sayles, T.A., Yanagisawa, T., Maple, M.

    Physical Review B - Condensed Matter and Materials Physics   76 ( 1 )   2007

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    DOI: 10.1103/PhysRevB.76.014527

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  • Possible magnetic chirality in optically chiral magnet [Cr(CN)(6)][Mn(S)-pnH(H2O)](H2O) probed by muon spin rotation and relaxation Reviewed

    Ohishi, Kazuki, Higemoto, Wataru, Koda, Akihiro, Saha, Shanta R, Kadono, Ryosuke, Inoue, Katsuya, Imai, Hiroyuki, Higashikawa, Hiroyuki

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   75 ( 6 )   63705 - 063705-5   2006.6

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    Local magnetic fields in a molecule-based optically chiral magnet [Cr(CN)(6)][Mn(S)-pnH(H2O)](H2O) [GN-(S)] and its enantiomer [GN-(R)] were studied by means of muon spin rotation and relaxation (mu SR). A detailed analysis of mu SR signals under a zero field observed in the magnetically ordered state supports the average magnetic structure suggested by the result of neutron powder diffraction. Moreover, a comparison of mu SR spectra between GN-(S) and GN-(R) suggests that they are a pair of complete optical isomers in terms of both crystallographic and magnetic structures. The possibility of magnetic chirality in such a pair is discussed.

    DOI: 10.1143/JPSJ.75.063705

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  • Magnetic field-induced quasiparticle excitation in Nb3 Sn: Evidence for anisotropic s -wave pairing Reviewed

    Kadono R, Satoh K.H, Koda A, Nagata T, Kawano-Furukawa H, Suzuki J, Matsuda M, Ohishi K, Higemoto W, Kuroiwa S, Takagiwa H, Akimitsu J

    Physical Review B - Condensed Matter and Materials Physics   74 ( 2 )   2006

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    DOI: 10.1103/PhysRevB.74.024513

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  • Magnetism and superconductivity of an electron-doped superconductor (Sr<inf>1-x</inf>La<inf>x</inf>)<inf>2</inf> Reviewed

    Kojima, K.M., Kawashima, K., Fujita, M., Yamada, K., Azuma, M., Takano, M., Koda, A., Ohishi, K., Higemoto, W., Kadono, R., Uemura, Y.J.

    Physica B: Condensed Matter   374-375   207 - 210   2006

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    DOI: 10.1016/j.physb.2005.11.057

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  • Magnetic response in the superconducting state of 1H-Ca(Al <inf>0.5</inf>Si <inf>0.5</inf>) <inf>2</inf> studied by μSR Reviewed

    Kuroiwa, S., Takagiwa, H., Yamazawa, M., Tomita, Y., Akimitsu, J., Ohishi, K., Koda, A., Saha, S.R., Kadono, R., Higemoto, W.

    Physica B: Condensed Matter   374-375   251 - 254   2006

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    DOI: 10.1016/j.physb.2005.11.067

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  • Possible weak magnetism in MB<inf>6</inf> (M:Ca, Ba) probed by muon spin relaxation and muon level-crossing resonance Reviewed

    Kuroiwa, S., Takagiwa, H., Yamazawa, M., Akimitsu, J., Koda, A., Kadono, R., Ohishi, K., Higemoto, W., Watanabe, I.

    Science and Technology of Advanced Materials   7 ( 1 SPEC. ISS. )   12 - 16   2006

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    DOI: 10.1016/j.stam.2005.11.012

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  • Possible unconventional superconductivity and weak magnetism in Na <inf>x</inf>CoO<inf>2</inf>·yH<inf>2</inf>O probed by μSR Reviewed

    Higemoto W, Ohishi K, Koda A, Kadono R, Sakurai H, Takada K, Takayama-Muromachi E, Sasaki T

    Physica B: Condensed Matter   374-375   274 - 277   2006

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    DOI: 10.1016/j.physb.2005.11.083

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  • Magnetic and superconducting phase diagram in oxybromite cuprate Ca <inf>2-x</inf>Na <inf>x</inf>CuO <inf>2</inf>Br <inf>2</inf> Reviewed

    Kuroiwa, S., Zenitani, Y., Yamazawa, M., Tomita, Y., Akimitsu, J., Ohishi, K., Koda, A., Saha, S.R., Kadono, R., Watanabe, I., Ohira, S.

    Physica B: Condensed Matter   374-375   75 - 78   2006

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    DOI: 10.1016/j.physb.2005.11.019

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  • Staggered magnetism in LiV<inf>2</inf>O<inf>4</inf> at low temperatures probed by means of the muon Knight shift Reviewed

    Koda, A., Kadono, R., Ohishi, K., Saha, S.R., Higemoto, W., Matsushita, Y., Ueda, Y.

    Journal of Physics Condensed Matter   17 ( 25 )   L257 - L264   2005

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    DOI: 10.1088/0953-8984/17/25/L03

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  • μsR studies on LaOs<inf>4</inf>Sb<inf>12</inf> in comparison with the time-reversal-symmetry-broken superconductor PrOs<inf>4</inf>Sb<inf>12</inf> Reviewed

    Aoki, Y., Higemoto, W., Sanada, S., Ohishi, K., Saha, S.R., Koda, A., Nishiyama, K., Kadono, R., Sugawara, H., Sato, H.

    Physica B: Condensed Matter   359-361 ( SPEC. ISS. )   895 - 897   2005

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    DOI: 10.1016/j.physb.2005.01.255

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  • μsR study on filled skutterudite PrRu<inf>4</inf>P<inf>12</inf> Reviewed

    Saha, S.R., Higemoto, W., Koda, A., Ohishi, K., Kadono, R., Aoki, Y., Sugawara, H., Sato, H.

    Physica B: Condensed Matter   359-361 ( SPEC. ISS. )   850 - 852   2005

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    DOI: 10.1016/j.physb.2005.01.249

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  • Field-induced uniform antiferromagnetic order associated with superconductivity in Pr <inf>1-x</inf>LaCe <inf>x</inf>CuO <inf>4-δ</inf> Reviewed

    Kadono R, Ohishi K, Koda A, Saha S.R, Higemoto W, Fujita M, Yamada K

    Journal of the Physical Society of Japan   74 ( 10 )   2806 - 2812   2005

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    DOI: 10.1143/JPSJ.74.2806

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  • Correlation between superconducting carrier density and transition temperature in NbB2+x Reviewed

    Takagiwa H, Kuroiwa S, Yamazawa M, Akimitsu J, Ohishi K, Koda A, Higemoto W, Kadono R

    Journal of the Physical Society of Japan   74 ( 5 )   1386 - 1389   2005

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    We report on the magnetic penetration depth, <TEX>$\lambda$</TEX>, in a type II superconductor NbB2+x determined by muon spin rotation/relaxation measurements. We show in the sample with <TEX>$x=0.1$</TEX>that <TEX>$\lambda$</TEX>at 2.0 K is independent of an applied magnetic field. This suggests that the superconducting order parameter in NbB2+x is isotropic, as expected for conventional BCS superconductors. Meanwhile, the superconducting carrier density (<TEX>$\propto\lambda^{-2}$</TEX>) exhibits an interesting tendency of increase with increasing <TEX>$T_{\text{c } }$</TEX>(where <TEX>$T_{\text{c } }$</TEX>varies with <TEX>$x$</TEX>), which is described by the weak-coupling BCS theory.

    DOI: 10.1143/JPSJ.74.1386

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  • Possible anisotropic order parameter in pyrochlore superconductor KOs <inf>2</inf>O <inf>6</inf> probed by muon spin rotation Reviewed

    Koda A, Higemoto W, Ohishi K, Saha S.R, Kadono R, Yonezawa S, Muraoka Y, Hiroi Z

    Journal of the Physical Society of Japan   74 ( 6 )   1678 - 1681   2005

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    DOI: 10.1143/JPSJ.74.1678

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  • Magnetic phase diagram of hole-doped Ca <inf>2-x</inf>Na <inf>x</inf>CuO <inf>2</inf>Cl <inf>2</inf> cuprate superconductor Reviewed

    Ohishi K, Yamada I, Koda A, Higemoto W, Saha S.R, Kadono R, Kojima K.M, Azuma M, Takano M

    Journal of the Physical Society of Japan   74 ( 9 )   2408 - 2412   2005

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    DOI: 10.1143/JPSJ.74.2408

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  • Possible unconventional superconductivity in NaxCoO2 center dot yH(2)O probed by muon spin rotation and relaxation Reviewed

    W Higemoto, K Ohishi, A Koda, Saha, SR, R Kadono, K Ishida, K Takada, H Sakurai, E Takayama-Muromachi, T Sasaki

    PHYSICAL REVIEW B   70 ( 13 )   2004.10

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    DOI: 10.1103/PhysRevB.70.134508

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  • Possible unconventional superconductivity in NaxCoO 2·yH2O probed by muon spin rotation and relaxation Reviewed

    Wataru Higemoto, Kazuki Ohishi, Akihiro Koda, Shanta Ranjan Saha, Ryosuke Kadono, Kenji Ishida, Kazunori Takada, Hiroya Sakurai, Eiji Takayama-Muromachi, Takayoshi Sasaki

    Physical Review B - Condensed Matter and Materials Physics   70 ( 13 )   1 - 134508   2004.10

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    DOI: 10.1103/PhysRevB.70.134508

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  • Expansion of vortex cores by strong electronic correlation in La2-xSrxCuO4 at low magnetic induction

    R Kadono, W Higemoto, A Koda, MI Larkin, GM Luke, AT Savici, YJ Uemura, KM Kojima, T Okamoto, T Kakeshita, S Uchida, T Ito, K Oka, M Takigawa, M Ichioka, K Machida

    PHYSICAL REVIEW B   69 ( 10 )   2004.3

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    DOI: 10.1103/PhysRevB.69.104523

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  • Unconventional behavior of field-induced quasiparticle excitation in Ca(Al <inf>0.5</inf>Si <inf>0.5</inf>) <inf>2</inf> Reviewed

    Kuroiwa S, Takagiwa H, Yamazawa M, Akimitsu J, Ohishi K, Koda A, Higemoto W, Kadono R

    Journal of the Physical Society of Japan   73 ( 10 )   2631 - 2634   2004

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    DOI: 10.1143/JPSJ.73.2631

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  • Spin fluctuation in LiV<inf>2</inf>O<inf>4</inf> studied by muon spin relaxation Reviewed

    Koda, A., Kadono, R., Higemoto, W., Ohishi, K., Ueda, H., Urano, C., Kondo, S., Nohara, M., Takagi, H.

    Physical Review B - Condensed Matter and Materials Physics   69 ( 1 )   2004

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    DOI: 10.1103/PhysRevB.69.012402

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  • Strong correlation between field-induced magnetism and superconductivity in Pr <inf>0.89</inf>LaCe <inf>0.11</inf>CuO <inf>4</inf> Reviewed

    Kadono R, Ohishi K, Koda A, Higemoto W, Kojima K.M, Fujita M, Kuroshima S.-I, Yamada K

    Journal of the Physical Society of Japan   73 ( 11 )   2944 - 2947   2004

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    DOI: 10.1143/JPSJ.73.2944

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  • Low-temperature magnetic order and spin dynamics in YbRh2Si2 Reviewed

    K. Ishida, E. MacLaughlin, Ben-Li Young, K. Okamoto, Y. Kawasaki, Y. Kitaoka, J. Nieuwenhuys, H. Heffner, O. Bernal, W. Higemoto, A. Koda, R. Kadono, O. Trovarelli, C. Geibel, F. Steglich

    Physical Review B - Condensed Matter and Materials Physics   68 ( 18 )   2003.11

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    DOI: 10.1103/PhysRevB.68.184401

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  • mu SR study of magnetism of CeRh2Si2 under a high pressure Reviewed

    W Higemoto, K Satoh, A Koda, K Nishiyama, K Shimomura, R Kadono, A Hanaoka, S Koiwai, Y Uwatoko, N Mori

    PHYSICA B-CONDENSED MATTER   329   601 - 602   2003.5

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    DOI: 10.1016/S0921-4526(02)02487-0

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  • mu SR and low-temperature antiferromagnetism in the ordered non-Fermi-liquid compound YbRh2Si2 Reviewed

    K Ishida, DE MacLaughlin, K Okamoto, Y Kawasaki, Y Kitaoka, GJ Nieuwenhuys, OO Bernal, A Koda, W Higemoto, R Kadono, C Geibel, F Steglich

    PHYSICA B-CONDENSED MATTER   329   589 - 590   2003.5

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    DOI: 10.1016/S0921-4526(02)02477-8

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  • Time-Reversal Symmetry-Breaking Superconductivity in Heavy-Fermion [Formula presented] Detected by Muon-Spin Relaxation Reviewed

    Aoki, Y., Tsuchiya, A., Kanayama, T., Saha, S.R., Sugawara, H., Sato, H., Higemoto, W., Koda, A., Ohishi, K., Nishiyama, K., Kadono, R.

    Physical Review Letters   91 ( 6 )   2003

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    DOI: 10.1103/PhysRevLett.91.067003

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    Other Link: http://orcid.org/0000-0002-0957-3396

  • Quasiparticle excitations outside the vortex cores in MgB2 probed by Muon spin rotation Reviewed

    Ohishi K, Muranaka T, Akimitsu J, Koda A, Higemoto W, Kadono R

    Journal of the Physical Society of Japan   72 ( 1 )   29 - 32   2003

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    The magnetic penetration depth $\lambda$ in the mixed state of MgB2 has been determined microscopically from the field distribution around magnetic vortices probed by muon spin rotation. Both the temperature and magnetic field dependence of $\lambda$ strongly suggest the presence of delocalized quasiparticles around the vortex cores. In particular, the effect of Doppler shift has been clearly observed as a finite gradient of the field dependence of $\lambda$, strongly suggesting an anisotropic order parameter with the region of a vanishingly small energy gap.

    DOI: 10.1143/JPSJ.72.29

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    Other Link: http://orcid.org/0000-0003-1494-6502

  • Excess quasiparticles outside the vortex cores in Y(Ni<inf>1-x</inf>Pt<inf>x</inf>)<inf>2</inf>B<inf>2</inf>C Reviewed

    Ohishi, K., Kakuta, K., Akimitsu, J., Koda, A., Higemoto, W., Kadono, R., Sonier, J.E., Price, A.N., Miller, R.I., Kiefl, R.F., Nohara, M., Suzuki, H., Takagi, H.

    Physica C: Superconductivity and its Applications   388-389   197 - 198   2003

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/S0921-4534(02)02725-9

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    Other Link: http://orcid.org/0000-0003-1494-6502

  • Magnetic ground state of Pr0.89LaCe0.11CuO4+alpha-delta with varied oxygen depletion probed by muon spin relaxation Reviewed

    Kadono R, Ohishi K, Koda A, Higemoto W, Kojima KM, Kuroshima S, Fujita M, Yamada K

    Journal of the Physical Society of Japan   72 ( 11 )   2955 - 2958   2003

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    The magnetic ground state of an electron-doped cuprate superconductor, Pr1-xLaCexCuO4+α-δ ($x=0.11$, $\alpha \simeq 0.04$), has been studied by means of muon spin rotation/relaxation ($\mu$SR) over a wide variety of oxygen depletion, $0.03 \le \delta \le 0.12$. The appearance of a weak random magnetism over the entire crystal volume has been revealed by a slow exponential relaxation. The absence of $\delta$-dependence for random magnetism and a multiplet pattern of the muon Knight shift at higher fields strongly suggest that the random moments are associated with excited Pr3+ ions under a crystal electric field.

    DOI: 10.1143/JPSJ.72.2955

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    Other Link: http://orcid.org/0000-0003-1494-6502

  • μSR Study of Cu Benzoate at very low temperature-Existence or Nonexistence of Long Range Order in Coupled Chains Reviewed

    T. Asano, H. Nojiri, W. Higemoto, A. Koda, R. Kadono, Y. Ajiro

    J. Phys. Soc. Jpn.   71 ( 2 )   594 - 598   2002.12

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    Zero-, longitudinal- and transverse-field $\mu$SR experiments are performed for a linear chain antiferromagnet Cu benzoate, Cu(C6H5COO)$\cdot$3H2O, and no long range order (LRO) is found down to 20 mK. The upper limit of the ratio of the Néel temperature to the exchange coupling, $k_{\text{B } }T_{\text{N } }/J<0.002$, is even better than that of Sr2CuO3, which is known as the best candidate of $S=1/2$ antiferromagnetic Heisenberg quantum spin chain. Significance of our findings is discussed in view of whether there is a non-zero critical coupling ratio necessary for LRO in coupled Heisenberg chains.

    DOI: 10.1143/JPSJ.71.594

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  • Muon spin relaxation study of magnetism of a triangular lattice BaVS3 Reviewed

    W Higemoto, A Koda, G Maruta, K Nishiyama, H Nakamura, S Giri, M Shiga

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   71 ( 10 )   2361 - 2364   2002.10

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    DOI: 10.1143/JPSJ.71.2361

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  • Evidence for the coexistence of superconductivity and the magnetic A-phase in CeCu2Si2 proved by muon Knight shift Reviewed

    A Koda, W Higemoto, R Kadono, Y Kawasaki, K Ishida, Y Kitaoka, C Geibel, F Steglich

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   71 ( 6 )   1427 - 1430   2002.6

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    DOI: 10.1143/JPSJ.71.1427

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  • Quasiparticle excitation in the superconducting pyrochlore Cd2Re2O7 probed by muon spin rotation Reviewed

    R Kadono, W Higemoto, A Koda, Y Kawasaki, M Hanawa, Z Hiroi

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   71 ( 3 )   709 - 712   2002.3

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    DOI: 10.1143/JPSJ.71.709

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  • Multiple phase transitions in CuO studied by μSR

    K. Nishiyama, W. Higemoto, K. Shimomura, A. Koda, G. Maruta, S. W. Nishiyama, X. G. Zheng

    Hyperfine Interactions   136-137 ( 3-8 )   289 - 294   2001

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Springer Netherlands  

    DOI: 10.1023/a:1020504620851

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  • Anomalous local magnetic shielding effect at muon site in Sr2.5Ca11.5Cu24O41 and Ce0.99Cu2.02Si2 Reviewed

    R Kadono, A Koda, W Higemoto, K Ohishi, K Kakuta, J Akimitsu, K Ishida, Y Kitaoka, C Geibel, F Steglich

    PHYSICA B   289   322 - 325   2000.8

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    DOI: 10.1016/S0921-4526(00)00402-6

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    Other Link: http://orcid.org/0000-0003-1494-6502

  • Transition of local muonium dynamics in NaCl Reviewed

    R Kadono, W Higemoto, A Koda

    PHYSICA B   289   464 - 467   2000.8

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  • Magnetism of anomalous A-phase in Ce1+xCu2+ySi2: a mu SR study Reviewed

    A Koda, W Higemoto, R Kadono, K Ishida, Y Kitaoka, C Geibel, F Steglich

    PHYSICA B   281   16 - 18   2000.6

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  • μSR study of anomalous phase transition in UCu<inf>2</inf>Sn Reviewed

    Higemoto, W., Koda, A., Kadono, R., Echizen, Y., Takabatake, T.

    Physica B: Condensed Matter   281-282   234 - 235   2000.6

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    Publishing type:Research paper (scientific journal)   Publisher:ELSEVIER SCIENCE BV  

    DOI: 10.1016/S0921-4526(99)00975-8

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  • High field heat capacities of some singlet ground state systems at very low temperatures

    Kobayashi, T.C., Koda, A., Amaya, K.

    Physica B: Condensed Matter   216 ( 3-4 )   1996

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    DOI: 10.1016/0921-4526(95)00500-5

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  • Heat capacities of one-dimensional Heisenberg antiferromagnets under high magnetic fields

    Kobayashi, T.C., Koda, A., Honda, H., Hong, C.U., Amaya, K., Asano, T., Ajiro, Y., Mekata, M., Yosida, T.

    Physica B: Physics of Condensed Matter   211 ( 1-4 )   1995

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    DOI: 10.1016/0921-4526(94)00986-6

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  • Heat capacity anomaly of CeCu<inf>2.05</inf>Si<inf>2</inf> under magnetic fields

    Kobayashi, T.C., Koda, A., Honda, H., Amaya, K., Kitaoka, Y., Asayama, K., Geibel, C., Steglich, F.

    Physica B: Physics of Condensed Matter   206-207 ( C )   1995

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    DOI: 10.1016/0921-4526(94)00531-Y

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  • Heat capacity anomaly of Haldane-gap antiferromagnet NENP below 1K

    Koda, A., Kobayashi, T., Tabuchi, Y., Amaya, K., Yosida, T.

    Physica B: Physics of Condensed Matter   194-196 ( PART 1 )   1994

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/0921-4526(94)90960-1

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  • Heat capacities in Haldane-gap antiferromagnet NENP and TMNIN under magnetic field

    Kobayashi, T., Koda, A., Tabuchi, Y., Amaya, K., Yosida, T., Deguchi, H., Ito, M., Takeda, K., Asano, T., Ajiro, Y., Mekata, M.

    Physica B: Physics of Condensed Matter   194-196 ( PART 1 )   1994

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/0921-4526(94)90959-8

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▼display all

MISC

  • Quantum criticality in YbCu4Ni by μSR

    谷口貴紀, 大里耕太郎, 大里耕太郎, 岡部博孝, SARI Dita Puspita, 渡邊功雄, 中村惇平, 幸田章宏, 藤田全基

    日本物理学会講演概要集(CD-ROM)   79 ( 2 )   2024

  • Hole concentration dependence of spin fluctuations enhanced by Fe impurity in overdoped / heavily overdoped Bi-2201 cuprates

    小宮山陽太, 小宮山陽太, 三輪和樹, 桑原英樹, 黒江晴彦, 幸田章宏, 中村惇平, 川股隆行, SARI Dita Puspita, SARI Dita Puspita, 渡邊功雄, 足立匡

    日本物理学会講演概要集(CD-ROM)   79 ( 2 )   2024

  • Determination of the Electron g-factor for a Muonium-related Paramagnetic Center in Rutile TiO2 Using the ESR Technique

    ITO T. U., ITO T. U., SAKAI H., KODA A., KODA A., HIGEMOTO W., HIGEMOTO W., HIGEMOTO W., ARIGA-MIWA H., SHIMOMURA K., SHIMOMURA K.

    KEK Progress Report (Web)   ( 2022-7 )   2023

  • μSR observation of multiple transition in YbCu4Au

    谷口貴紀, 大里耕太郎, 大里耕太郎, 岡部博孝, 池田陽一, 南部雄亮, 南部雄亮, 南部雄亮, SARI Dita Puspita, SARI Dita Puspita, 渡邊功雄, 幸田章宏, 藤田全基

    日本物理学会講演概要集(CD-ROM)   77 ( 2 )   2022

  • Neutron diffraction and muon spin rotation study of low-temperature magnetism in heavy fermion compound YbCu4Ni

    大里耕太郎, 大里耕太郎, 谷口貴紀, 岡部博孝, 池田陽一, 南部雄亮, 南部雄亮, 南部雄亮, 郷地順, 上床美也, SARI D. P., SARI D. P., 渡邊功雄, 幸田章宏, 藤田全基

    日本物理学会講演概要集(CD-ROM)   77 ( 2 )   2022

  • Determining the muon site of La2CuO4+δ by experimental method: I

    宮崎正範, 川股隆行, 足立匡, 小池洋二, 平石雅俊, 岡部博孝, 岡部博孝, 幸田章宏, 幸田章宏, 小嶋健児, 門野良典, 門野良典, 戎修二

    日本物理学会講演概要集(CD-ROM)   76 ( 1 )   2021

  • Hydrogen simulation in the pyrite-type sulfide semiconductor FeS2

    岡部博孝, 平石雅俊, 竹下聡史, 竹下聡史, 幸田章宏, 幸田章宏, 小嶋健児, 大澤健男, 大橋直樹, 門野良典, 門野良典

    応用物理学会春季学術講演会講演予稿集(CD-ROM)   68th   2021

  • Local susceptibility and Van Vleck paramagnetism in the electride material LaScSi

    平石雅俊, 小嶋健児, 小嶋健児, 岡部博孝, 幸田章宏, 幸田章宏, 門野良典, 門野良典, WU Jiazhen, 細野秀雄, 細野秀雄

    日本物理学会講演概要集(CD-ROM)   76 ( 1 )   2021

  • Development of a method for measuring polymer dynamics using negative muon spin relaxation

    竹下聡史, 梅垣いづみ, 杉山純, 平石雅俊, 幸田章宏, 岡部博孝, 西村昇一郎, 中村惇平, 神田聡太郎, 下村浩一郎, 門野良典, 瀬戸秀紀

    日本物理学会講演概要集(CD-ROM)   76 ( 1 )   2021

  • Magnetic properties of new delta chain compounds

    塚原隆史, 藤原理賀, 満田節生, 岡部博孝, 幸田章宏

    日本物理学会講演概要集(CD-ROM)   76 ( 1 )   2021

  • Quantum spin state in one-dimensional quantum spin system Cd2Cu2(PO4)2SO4・5H2O

    藤原理賀, 満田節生, 桑井智彦, 岡部博孝, 幸田章宏

    日本物理学会講演概要集(CD-ROM)   76 ( 1 )   2021

  • Performance Test of 5 T μSR Spectrometer

    西村昇一郎, 岡部博孝, 門野良典, 幸田章宏, 小嶋健児, 中村惇平, 平石雅俊, 宮崎正範

    日本物理学会講演概要集(CD-ROM)   76 ( 1 )   2021

  • Transformation of Interstitial Proton into Substitutional Hydride in Heavily Reduced Rutile TiO2 Simulated with Positively Charged Muons

    ITO T. U., HIGEMOTO W., HIGEMOTO W., KODA A., SHIMOMURA K., ARIGA-MIWA H.

    KEK Progress Report (Web)   ( 2020-4 )   2020

  • ワイドギャップ半導体InGaZnO4における格子間水素の電子状態

    平石雅俊, 小嶋健児, 岡部博孝, 幸田章宏, 幸田章宏, 門野良典, 門野良典, 井手啓介, 松石聡, 雲見日出也, 神谷利夫, 神谷利夫, 細野秀雄, 細野秀雄

    応用物理学会春季学術講演会講演予稿集(CD-ROM)   67th   2020

  • Doping dependence of magnetic fluctuations in (La,Na)Fe2As2

    飯田一樹, 永井佑紀, 永井佑紀, 岡部博孝, 村井直樹, 石角元志, 中村充孝, 稲村泰弘, 幸田章宏, 幸田章宏, 門野良典, 門野良典, 石田茂之, 川島健司, 川島健司, 吉田良行, 永崎洋, 伊豫彰

    日本物理学会講演概要集(CD-ROM)   75 ( 1 )   2020

  • Local electronic states of hydrogen in the rutile-type MnO2

    岡部博孝, 門野良典, 門野良典, 平石雅俊, 幸田章宏, 幸田章宏, 竹下聡史, 竹下聡史, 小嶋健児, 山内一宏, 佐藤博彦

    応用物理学会春季学術講演会講演予稿集(CD-ROM)   67th   2020

  • Whether the anisotropic triangular lattice antiferromagnet Ba3ReO5Cl2 is spin liquid or not?

    平井大悟郎, 幸田章宏, 岡部博孝, 平石雅俊, 中村惇平, 門野良典, 広井善二

    日本物理学会講演概要集(CD-ROM)   75 ( 1 )   2020

  • Reliability of muon site estimation using first-principle calculations

    平石雅俊, LI H., 岡部博孝, 幸田章宏, 幸田章宏, 小嶋健児, 下村浩一郎, 下村浩一郎, 門野良典, 門野良典

    日本物理学会講演概要集(CD-ROM)   75 ( 1 )   2020

  • Study of annealing effects on the magnetism in T*-structured La1-x/2Eu1-x/2SrxCuO4 investigated by muon spin relaxation

    浅野駿, 浅野駿, 鈴木謙介, 工藤康太, 渡邊功雄, 幸田章宏, 門野良典, 野地尚, 小池洋二, 谷口貴紀, 北川俊作, 石田憲二, 藤田全基

    量子ビームサイエンスフェスタ(Web)   2019   2020

  • Simulation Study of the J-PARC μSR Spectrometer with the 5T Magnet

    西村昇一郎, 岡部博孝, 門野良典, 幸田章宏, 中村惇平, 平石雅俊

    日本物理学会講演概要集(CD-ROM)   75 ( 1 )   2020

  • Effect of Alkaline Earth Metal Substitution on New Iridium Oxyfluoride

    倉持建汰, 倉持建汰, 嶋野智仁, 嶋野智仁, 西尾太一郎, 内山智貴, 内本喜晴, 岡部博孝, 幸田章宏, 堀金和正, 秋光純, 荻野拓

    応用物理学会春季学術講演会講演予稿集(CD-ROM)   67th   2020

  • Dynamic μSR measurement by simultaneous thermal and magnetic field sweep

    西村昇一郎, 梅垣いづみ, 岡部博孝, 門野良典, 幸田章宏, 杉山純, 中村惇平, 平石雅俊

    日本物理学会講演概要集(CD-ROM)   75 ( 2 )   2020

  • μSR study in lightly electron doped Sr2-xLaxIrO4

    堀金和正, 角田了, 岡部博孝, 町田一樹, 堀江理恵, 小林夏野, 小林夏野, 秋光正子, 幸田章宏, 門野良典, 秋光純

    日本物理学会講演概要集(CD-ROM)   75 ( 1 )   2020

  • Local electronic structure of hydrogen in wide-gap semiconductor β-Ga2O3

    平石雅俊, 岡部博孝, 幸田章宏, 幸田章宏, 門野良典, 門野良典, 井手啓介, 神谷利夫, 神谷利夫, 細野秀雄, 細野秀雄

    応用物理学会秋季学術講演会講演予稿集(CD-ROM)   81st   2020

  • Local electronic states of hydrogen in the rutile-type MnO2: II

    岡部博孝, 門野良典, 門野良典, 平石雅俊, 幸田章宏, 幸田章宏, 竹下聡史, 竹下聡史, 小嶋健児, 山内一宏, 佐藤博彦

    応用物理学会秋季学術講演会講演予稿集(CD-ROM)   81st   2020

  • μSRによるRMn2O5(R=Sm,Y)の酸素磁性観測

    石井祐太, 野田幸男, 木村宏之, 佐賀山基, 平石雅俊, 岡部博孝, 竹下聡史, 幸田章宏, 小嶋健児, 門野良典

    日本物理学会講演概要集(CD-ROM)   74 ( 2 )   2019

  • 水素吸蔵物質Y2CHxにおける水素の電子状態

    平石雅俊, 小嶋健児, 岡部博孝, 竹下聡史, 幸田章宏, 門野良典, ZHANG Xiao, 松石聡, 細野秀雄, 細野秀雄, 平田和人, 大谷茂樹, 大橋直樹

    応用物理学会秋季学術講演会講演予稿集(CD-ROM)   80th   2019

  • μSR法で眺める有機無機ハイブリッドペロブスカイトMAPbI3におけるMA分子の動的挙動

    幸田章宏, 幸田章宏, 門野良典, 門野良典, 岡部博孝, 平石雅俊, LEE S.H., CHOI J.J., DAGNALL K.

    日本物理学会講演概要集(CD-ROM)   74 ( 1 )   2019

  • マルチフェロイック物質MnWO4のスピン揺らぎ

    佐賀山基, 佐賀山基, 岡部博孝, 阿部伸行, 有馬孝尚, 平石雅俊, 幸田章宏, 幸田章宏, 石井祐太, 小嶋健児, 門野良典, 門野良典

    日本物理学会講演概要集(CD-ROM)   74 ( 1 )   2019

  • InGaZnO4バルク単結晶における格子間水素の電子状態

    平石雅俊, 小嶋健児, 岡部博孝, 幸田章宏, 幸田章宏, 門野良典, 門野良典, 小林裕樹, 宮川宣明

    応用物理学会春季学術講演会講演予稿集(CD-ROM)   66th   2019

  • 電子ドープ型T’銅酸化物Nd2-xCexCuO4のアンダードープ領域における還元処理による電子状態の変化

    出井優, 川端公貴, 今井明音, 馬橋直貴, 桑原英樹, 黒江晴彦, 渡邊功雄, 幸田章宏, 岡部博孝, 門野良典, 足立匡

    日本物理学会講演概要集(CD-ROM)   74 ( 2 )   2019

  • μSR法を用いたSr2-xLaxIrO4の磁気相図の決定

    町田一樹, 堀金和正, 藤井政徳, 岡部博孝, 小林夏野, 小林夏野, 堀江理恵, 石井啓文, 久保園芳博, 久保園芳博, 幸田章宏, 門野良典, 秋光純

    日本物理学会講演概要集(CD-ROM)   74 ( 1 )   2019

  • μSR法で眺める有機無機ハイブリッドペロブスカイトFAPbI3におけるFA分子の動的挙動

    幸田章宏, 幸田章宏, 平石雅俊, 岡部博孝, 門野良典, 門野良典, LEE S.H., CHOI J.J., DAGNALL K.

    日本物理学会講演概要集(CD-ROM)   74 ( 2 )   2019

  • マルチフェロイック物質MnWO4のスピン揺らぎ II

    佐賀山基, 佐賀山基, 岡部博孝, 阿部伸行, 有馬孝尚, 平石雅俊, 幸田章宏, 幸田章宏, 石井祐太, 小嶋健児, 門野良典, 門野良典

    日本物理学会講演概要集(CD-ROM)   74 ( 2 )   2019

  • All-In-All-Out反強磁性体Cd2Os2O7におけるスピン・電荷・フォノン結合ゆらぎ

    幸田章宏, 幸田章宏, 廣瀬陽代, 宮崎正範, 岡部博孝, 平石雅俊, 山内一宏, 小嶋健児, 長島一成, 山浦淳一, 広井善二, 門野良典, 門野良典

    日本物理学会講演概要集(CD-ROM)   74 ( 2 )   2019

  • ミュオンスピン緩和実験によるZn置換La1-x/2Eu1-x/2SrxCuO4のCuスピン相関の研究

    工藤康太, 浅野駿, 岡部博孝, 幸田章宏, 門野良典, 藤田全基

    日本物理学会講演概要集(CD-ROM)   74 ( 2 )   2019

  • 大強度ビームで実現する動的μSR測定

    西村昇一郎, 秋光純, 岩崎賢, 岡部博孝, 門野良典, 高阪勇輔, 幸田章宏, 中村惇平, 平石雅俊

    日本物理学会講演概要集(CD-ROM)   74 ( 2 )   2019

  • ワイドギャップ半導体IGZOとZnO中の格子間水素の電子状態

    小嶋健児, 平石雅俊, 岡部博孝, 幸田章宏, 門野良典, SUTER Andreas, PROKSCHA Thomas, SALMAN Zahar, 大橋直樹, 井手啓介, 松石聡, 神谷利夫, 雲見日出也, 細野秀雄

    応用物理学会春季学術講演会講演予稿集(CD-ROM)   65th   2018

  • Microwave spectroscopy experiment of a hyperfine structure of the muonium atom : a progress report

    Torii H. A., Ito T. U., Iwasaki M., Kadono R., Kamigaito O., Kanda S., Kawall D., Kawamura N., Koda A., Kojima K. M., Kubo M. K., Aoki M., Matsuda Y., Mibe T., Miyake Y., Mizutani T., Nagamine K., Nishimura S., Ogitsu T., Okubo R., Saito N., Sasaki K., Fukao M., Sato Y., Seo S., Shimomura K., Strasser P., Sugano M., Tajima M., Tanaka T., Tanaka K. S., Tomono D., Torikai E., Higashi Y., Toyoda A., Ueno K., Ueno Y., Yagi D., Yasuda H., Yamanaka T., Yamazaki T., Yamamoto A., Yoshida M., Yoshioka T., Higuchi T., Iinuma H., Ikedo Y., Ishida K., Ito T.

    Meeting Abstracts of the Physical Society of Japan   73 ( 0 )   2510 - 2510   2018

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    DOI: 10.11316/jpsgaiyo.73.1.0_2510

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  • エレクトライド物質LaScSiにおける格子間水素の電子状態

    平石雅俊, 小嶋健児, 小嶋健児, 岡部博孝, 岡部博孝, 竹下聡史, 幸田章宏, 幸田章宏, 門野良典, 門野良典, WU Jiazhen, 細野秀雄, 細野秀雄

    応用物理学会春季学術講演会講演予稿集(CD-ROM)   65th   2018

  • 三角格子反強磁性体Li2AMo3O8(A=In,Sc)のμSR

    岡部博孝, 飯田一樹, 梶本亮一, 吉田紘行, 石井裕人, 村井直樹, 石角元志, 稲村泰弘, 中島健次, 幸田章宏, 幸田章宏, 平石雅俊, 竹下聡史, 竹下聡史, 小嶋健児, 小嶋健児, 門野良典, 門野良典

    日本物理学会講演概要集(CD-ROM)   73 ( 2 )   2018

  • メカニカルアロイ法によるSr2-xLaxIrO4の磁気相図

    堀金和正, 藤井政徳, 岡部博孝, 小林夏野, 堀江理恵, 石井啓文, LIAO Y-F., 久保園芳博, 幸田章宏, 門野良典, 秋光純

    日本物理学会講演概要集(CD-ROM)   73 ( 1 )   2018

  • ミュオンスピン緩和法で見た分子ダイナミクスの分子量依存性

    竹下聡史, 下村浩一郎, 岡部博孝, 平石雅俊, 幸田章宏, 小嶋健児, 門野良典, 瀬戸秀紀

    高分子学会予稿集(CD-ROM)   67 ( 2 )   2018

  • エレクトライド物質LaScSiにおける格子間水素の電子状態(II)

    平石雅俊, 小嶋健児, 小嶋健児, 岡部博孝, 岡部博孝, 竹下聡史, 幸田章宏, 幸田章宏, 門野良典, 門野良典, WU Jiazhen, LI Jiang, 細野秀雄, 細野秀雄

    応用物理学会秋季学術講演会講演予稿集(CD-ROM)   79th   2018

  • ミュオンスピン緩和法によるポリブタジエンの分子ダイナミクス観測

    竹下聡史, 下村浩一郎, 岡部博孝, 平石雅俊, 幸田章宏, 小嶋健児, 門野良典, 瀬戸秀紀, 増井友美, 若林昇

    高分子学会予稿集(CD-ROM)   66 ( 1 )   2017

  • Precision Spectroscopy of Muonium Hyperfine Splitting at Very Low Field Utilizing High-Intensity Pulsed Muon Beam

    Ueno Y, Kamigaito O, Kanda S, Kawall D, Kawamura N, Koda A, Kojima K. M, Kubo M. K, Matsuda Y, Mibe T, Miyake Y, Aoki M, Nagamine K, Nishimura S, Ogitsu T, Okubo R, Saito N, Sasaki K, Seo S, Shimomura K, Strasser P, Sugano M, Fukao Y, Tanaka T, Tanaka K. S, Tomono D, Torii H. A, Torikai E, Toyoda A, Ueno K, Yagi D, Yamamoto A, Yoshida M, Iinuma H, Ikedo Y, Ishida K, Ito T. U, Iwasaki M, Kadono R

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   453 - 453   2017

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  • ミュオンスピン緩和法を用いた分子ダイナミクスの新たな観測法

    竹下聡史, 下村浩一郎, 岡部博孝, 平石雅俊, 幸田章宏, 小嶋健児, 門野良典, 瀬戸秀紀, 増井友美, 若林昇

    高分子学会予稿集(CD-ROM)   66 ( 2 )   2017

  • Status of the precise measurement of the muonium hyperfine structure interval at J-PARC MUSE

    Ueno Y, Iwasaki M, Kadono R, Kamigaito O, Kanda S, Kawall D, Kawamura N, Koda A, Kojima K. M, Kubo M. K, Matsuda Y, Aoki M, Matsudate T, Mibe T, Miyake Y, Mizutani T, Nagamine K, Nishimura S, Ogitsu T, Okubo R, Saito N, Sasaki K, Fukao M, Seo S, Shimomura K, Strasser P, Sugano M, Tajima M, Tanaka T, Tanaka K. S, Tomono D, Torii H. A, Torikai E, Higashi Y, Toyoda A, Ueno K, Yagi D, Yamamoto A, Yoshida M, Higuchi T, Iinuma H, Ikedo Y, Ishida K, Ito T. U

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   2672 - 2672   2017

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    &lt;p&gt;ミュオニウム(Mu)はレプトンのみからなる水素様原子であり,Muの超微細構造(HFS)の精密測定は束縛系量子電磁力学の厳しい検証となる.MuSEUM実験はJ−PARC MUSEの高強度パルスミュオンビームを用いて大統計量を達成し,MuHFSを従来より高い精度で測定することを目指す.本講演では,最新の測定結果を示すとともに今後の展望を議論する.&lt;/p&gt;

    DOI: 10.11316/jpsgaiyo.72.1.0_2672

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  • 反磁性ミュオンスピン緩和法によるポリブタジエンのMHz帯緩和

    竹下聡史, 岡部博孝, 平石雅俊, 小嶋健児, 幸田章宏, 門野良典, 瀬戸秀紀, 増井友美, 若林昇

    日本物理学会講演概要集(CD-ROM)   72 ( 2 )   2017

  • 無機カイラル磁性体CsCuCl3の磁気秩序状態

    大石一城, 高阪勇輔, 小山珠美, PROSKURINA E, PROSKURINA E, 小椋隆弘, 幸田章宏, 小嶋健児, LUETKENS H, AMATO A, 秋光純, 井上克也

    日本物理学会講演概要集(CD-ROM)   71 ( 1 )   ROMBUNNO.19ABM-10 - 1975   2016.3

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    DOI: 10.11316/jpsgaiyo.71.1.0_1975

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  • μSR法を用いた量子スピン系Rb2Cu2Mo3O12の磁性研究

    河村聖子, 富安啓輔, 幸田章宏, SARI Dita Puspita, SARI Dita Puspita, ASIH Retno, ASIH Retno, YOON Sungwon, YOON Sungwon, 渡邊功雄, 渡邊功雄, 渡邊功雄, 中島健次

    日本物理学会講演概要集(CD-ROM)   71 ( 2 )   2016

  • ミュオンスピン緩和法から見たポリブタジエンのダイナミクス III

    竹下聡史, 岡部博孝, 平石雅俊, 小嶋健児, 幸田章宏, 門野良典, 瀬戸秀紀, 増井友美, 若林昇

    日本物理学会講演概要集(CD-ROM)   71 ( 2 )   2016

  • S=3/2カゴメ格子反強磁性体Li2Cr3SbO8のμSR

    岡部博孝, 岡部博孝, 竹下聡史, 平石雅俊, 幸田章宏, 幸田章宏, 小嶋健児, 小嶋健児, 門野良典, 門野良典, 石井裕人, 小田研, 吉田紘行

    日本物理学会講演概要集(CD-ROM)   71 ( 2 )   2016

  • μSRで見た単結晶LiV2O4における磁気揺らぎと局所帯磁率

    岡部博孝, 門野良典, 門野良典, 山内一宏, 宮崎正範, 平石雅俊, 幸田章宏, 幸田章宏, 小嶋健児, 小嶋健児, 松下能孝

    日本物理学会講演概要集(CD-ROM)   71 ( 2 )   2016

  • Performance Assessment of RF/Gas System for Precise Measurement of Muonium Hyperfine Splitting

    Ueno Y, Iwasaki M, Kadono R, Kamigaito O, Kanda S, Kawall D, Kawamura N, Koda A, Kojima K M, Kubo M K, Matsuda Y, Aoki M, Matsudate T, Mibe T, Miyake Y, Mizutani T, Nagamine K, Nishimura S, Ogitsu T, Okubo R, Saito N, Sasaki K, Fukao M, Seo S, Shimomura K, Strasser P, Sugano M, Tajima M, Tanaka T, Tanaka K S, Tomono D, Torii H A, Torikai E, Higashi Y, Toyoda A, Ueno K, Yagi D, Yamamoto A, Yoshida M, Higuchi T, Iinuma H, Ikedo Y, Ishida K, Ito T U

    Meeting Abstracts of the Physical Society of Japan   71 ( 0 )   95 - 95   2016

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    &lt;p&gt;ミューオニウム(Mu)はレプトンのみからなる水素様原子であり、Muの超微細構造(HFS)の精密測定は束縛系量子電磁力学の厳しい検証となる。MuSEUM実験はJ−PARCの高強度パルスミューオンビームを用いて大統計量を達成し、MuHFSを従来より高い精度で測定することを目指している。本講演では、Mu生成用の気体標的装置及び超微細構造遷移を誘起するマイクロ波装置の性能評価について述べ、今後の展望について議論する。&lt;/p&gt;

    DOI: 10.11316/jpsgaiyo.71.2.0_95

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  • Measurement of magnetic field distribution in the target space for precision measurement of muonium hyperfine structure

    Seo S, Iwasaki M, Kadono R, Kamigaito O, Kanda S, Kawall D, Kawamura N, Koda A, Kojima K M, Kubo M K, Matsuda Y, Aoki M, Matsudate T, Mibe T, Miyake Y, Mizutani T, Nagamine K, Nishimura S, Ogitsu T, Okubo R, Saito N, Sasaki K, Fukao M, Shimomura K, Strasser P, Sugano M, Tajima M, Tanaka T, Tanaka K S, Tomono D, Torii H A, Torikai E, Toyoda A, Higashi Y, Ueno K, Ueno Y, Yagi D, Yamamoto A, Yoshida M, Higuchi T, Iinuma H, Ikedo Y, Ishida K, Ito T U

    Meeting Abstracts of the Physical Society of Japan   71 ( 0 )   96 - 96   2016

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    &lt;p&gt;束縛系QEDの検証として、MuSEUMグループはJ-PARCにてミューオニウム(正ミューオンと電子の束縛系)の超微細構造精密測定実験を進行中である。ゼロ磁場条件下での測定を目指すため、地磁気を含む環境磁場の遮蔽が実験精度向上に必要である。そのためパーマロイ材を用いた磁気シールドで標的空間の磁場を遮蔽し、その下でシールド内磁場を測定した。本講演では測定結果とそれを踏まえての実験精度の考察を報告する。&lt;/p&gt;

    DOI: 10.11316/jpsgaiyo.71.2.0_96

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  • セメントC12A7への水素照射で現れる永続的光誘電気伝導の起源

    平石雅俊, 小嶋健児, 宮崎正範, 山内一宏, 岡部博孝, 竹下聡史, 幸田章宏, 門野良典, 松石聡, 細野秀雄, 細野秀雄

    日本物理学会講演概要集(CD-ROM)   71 ( 2 )   2016

  • 21aBE-4 Magnetic Ordering in a Chiral Helimagnet CsCuCl_3

    Ohishi K, Kousaka Y, Proskurina E, Ogura T, Koda A, Akimitsu J, Inoue K

    日本物理学会講演概要集   70 ( 1 )   1978 - 1978   2015.3

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    DOI: 10.11316/jpsgaiyo.70.1.0_1978

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  • リチウムコバルトリン酸化合物の磁気状態

    OKABE HIROTAKA, OKABE HIROTAKA, MIYAZAKI MASANORI, HIRAISHI MASATOSHI, YAMAUCHI ICHIHIRO, TAKESHITA SOUSHI, KODA AKIHIRO, KODA AKIHIRO, KOJIMA KENJI, KOJIMA KENJI, KADONO RYOSUKE, KADONO RYOSUKE, YOSHIDA HIROYUKI, MIYAKAWA MASASHI, MATSUSHITA YOSHITAKA

    物構研サイエンスフェスタ要旨集   3rd   36   2015

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  • 7aPS-134 Magnetic properties of β'-LiCoPO_4

    Okabe H., Yoshida H., Miyakawa M., Matsushita Y., Miyazaki M., Hiraishi M., Yamauchi I., Takeshita S., Koda A., Kojima K. M., Kadono R.

    Meeting abstracts of the Physical Society of Japan   69 ( 2 )   262 - 262   2014.8

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  • 7aBD-5 Comparison of RSXS magnetic scattering and μSR in short-range magnetic correlation of La_<2-x>Sr_xNiO_4 (x=0.4〜1)

    Kojima K. M., Yamasaki Y., Miyazaki M., Hiraishi M., Yamauchi Ichihiro, Koda A., Kadono R., Uchida M., Tokura Y.

    Meeting abstracts of the Physical Society of Japan   69 ( 2 )   319 - 319   2014.8

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  • β’‐LiCoPO4の磁気物性

    OKABE HIROTAKA, YOSHIDA HIROYUKI, MIYAKAWA MASASHI, MATSUSHITA YOSHITAKA, MIYAZAKI MASANORI, HIRAISHI MASATOSHI, YAMAUCHI ICHIHIRO, TAKESHITA SOUSHI, KODA AKIHIRO, KOJIMA KENJI, KADONO RYOSUKE

    日本物理学会講演概要集   69 ( 2 )   262   2014.8

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  • 8aBD-8 Magnetic ground state of CeFeAsO_<1-x>H_x probed by μSR (II)

    Hiraishi M., Kojima K. M., Yamauchi I., Miyazaki M., Okabe H., Takeshita S., Koda A., Kadono R., Iimura S., Matsuishi S., Hosono H.

    Meeting abstracts of the Physical Society of Japan   69 ( 2 )   348 - 348   2014.8

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  • 7aBD-4 Novel coexistence of the superconductivity with the short-range magnetic order in electron-doped T'-214 high-T_c superconductors

    Adachi T., Takahashi A., Suzuki K. M., Baqiya M. A., Konno T., Takamatsu T., Kato M., Watanabe I., Koda A., Miyazaki M., Kadono R., Koike Y.

    Meeting abstracts of the Physical Society of Japan   69 ( 2 )   319 - 319   2014.8

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  • 9pAE-9 Development of New μ SR Spectrometer at D1 area of J-PARC MUSE, based on Kalliope detectors

    Kojima K. M., Murakami T., Takahashi Y., Lee H., Suzuki S. Y, Koda A., Yamauchi I., Miyazaki M., Hiraishi M., Okabe H., Takeshita S., Kadono R., Ito T., Higemoto W., Kanda S., Fukao Y., Saito N., Ikeno M., Saito M., Uchida T., Tanaka M.

    Meeting abstracts of the Physical Society of Japan   69 ( 2 )   703 - 703   2014.8

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  • 28aCE-9 Magnetic ground state of CeFeAsO_<1-x>H_x probed by μSR

    Hiraishi M., Kojima K. M., Yamauchi I., Miyazaki M., Koda A., Kadono R., Iimura S., Matsuishi S., Hosono H.

    Meeting abstracts of the Physical Society of Japan   69 ( 1 )   587 - 587   2014.3

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  • 30aAB-11 Simulation for high magnetic field μSR spectrometer in J-PARC MUSE

    Miyazaki M., Kojima K. M., Kanda S., Hiraishi M., Yamauchi I., Koda A., Kadono R.

    Meeting abstracts of the Physical Society of Japan   69 ( 1 )   943 - 943   2014.3

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  • 30aAB-10 Progress on the construction of the surface muon beamline "S-Line" at J-PARC MUSE

    Strasser P., Koda A., Kawamura N., Fujimori H., Shimomura K., Nishiyama K., Miyazaki M., Kojima K. M., Kadono R., Miyake Y., Ito T. U., Higemoto W.

    Meeting abstracts of the Physical Society of Japan   69 ( 1 )   942 - 942   2014.3

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  • 30aAL-5 Electronic state of hydrogen impurities in perovskite oxides probed byμSR spectroscopy

    Ito T. U., Higemoto W., Koda A., Nishiyama K., Shimomura K.

    Meeting abstracts of the Physical Society of Japan   69 ( 1 )   944 - 944   2014.3

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  • 29pCE-9 A NMR and μSR study on the magnetic ground state in a thiospinel CuIr_2S_4

    Yamauchi I., Kojima K. M., Miyazaki M., Hiraishi M., Koda A., Kadono R., Takigawa M., Tsuchiya Y., Suzuki H. S., Kitazawa H.

    Meeting abstracts of the Physical Society of Japan   69 ( 1 )   653 - 653   2014.3

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  • 30pSD-4 Designing of the magnetic field probe for muonium HFS at J-PAEC MLF

    Mizutani T., Kamigaito O., Kawamura N., Kanda S., Kume T., Koda A., Kojima K., Saito N., Sakamoto N., Sasaki K., Shimomura K., Aoki M., Sugano M., Suda K., Tajima M., Tanaka S., Tanaka K., Tomono D., Toyoda A., Torii A., Torikai E., Nagamine K., Iinuma H., Nishiyama K., Strasser P., Fukao Y., Fujiwara Y., Matsuda Y., Mibe T., Miyake Y., Yoshida M., Ikedo Y., Ishida K., Iwasaki M., Ohkubo R., Ogitsu T., Kadono R.

    Meeting Abstracts of the Physical Society of Japan   69 ( 0 )   41 - 41   2014

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    DOI: 10.11316/jpsgaiyo.69.1.1.0_41_4

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  • 30pSD-3 Measurement of muonium HFS at J-PARC MUSE

    Tanaka S., Kamigaito O., Kawamura N., Kanda S., Kume T., Koda A., Kojima K., Saito N., Sakamoto N., Sasaki K., Shimomura K., Aoki M., Sugano M., Suda K., Tanaka K., Toyoda A., Torii A., Torikai E., Nagamine K., Nishiyama K., Strasser P., Fukao Y., Iinuma H., Fujiwara Y., Matsuda Y., Mibe T., Miyake Y., Ikedo Y., Ishida K., Iwasaki M., Ohkubo R., Ogitsu T., Kadono R.

    Meeting Abstracts of the Physical Society of Japan   69 ( 0 )   41 - 41   2014

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    DOI: 10.11316/jpsgaiyo.69.1.1.0_41_3

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  • ミュオン・ナイトシフトで見た(Y,Sc)Mn2の局所磁化率と磁気ゆらぎ

    門野良典, 宮崎正範, 平石雅俊, 山内一宏, 幸田章宏, 小嶋健児, 中村裕之

    日本物理学会2013年秋季大会   2013.9

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  • Electron doping dependence of hydrogen states in C12A7 probed by muon spin relaxation

    Kojima K.M., Miyazaki M., Hiraishi M., Yamauchi I., Koda A., Kadono R., Matsuishi S., Hosono H.

    Meeting abstracts of the Physical Society of Japan   68 ( 2 )   860 - 860   2013.8

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  • Study of superconducting property of LaFeAsO_<1-x>H_x probed by μSR.

    Hiraishi M., Kojima K.M., Yamauchi I., Miyazaki M., Koda A., Kadono R., Iimura S., Matsuishi S., Hosono H.

    Meeting abstracts of the Physical Society of Japan   68 ( 2 )   575 - 575   2013.8

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  • Magnetic ground state of Y(Sc)Mn_2 probed by muon Knight shift

    Kadono R., Miyazaki M., Yamauchi I., Hiraishi M., Koda A., Kojima M.K., Nakamura H.

    Meeting abstracts of the Physical Society of Japan   68 ( 2 )   583 - 583   2013.8

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  • Spin dynamics in heavy-fermion itinerant magnet of pyrochlore compound YMn_2Zn_<20-x>M_x(M=In,Al)

    Miyazaki M., Kadono R., Hiraishi M., Yamauchi I., Koda A., Kojima M.K., Okamoto Y., Hiroi Z.

    Meeting abstracts of the Physical Society of Japan   68 ( 2 )   583 - 583   2013.8

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  • Observation of Dynamics of H2 in hydrogen storage material MgH_2 by μSR

    Umegaki I, Nozaki H., Harada M., Sugiyama J., Koda A., Miyake Y., Brewer J.H.

    Meeting abstracts of the Physical Society of Japan   68 ( 2 )   875 - 875   2013.8

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  • μSR study of effects of the reduction annealing on the spin dynamics in the electron-doped high-Tc cuprate Pr_<1.3-x>La_<0.7>Ce_xCuO_<4+δ>(x=0.10)

    Takahashi A., Adachi T., Suzuki K.M., Baqiya M.A., Watanabe I., Koda A., Miyazaki M., Kadono R., Koike Y.

    Meeting abstracts of the Physical Society of Japan   68 ( 2 )   499 - 499   2013.8

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  • 26aXS-9 Investigation of hydrogen states in C12A7 using muon spin relaxation

    Kojima K. M., Miyazaki M., Hiraishi M., Yamauchi I., Koda A., Kadono R., Matsuishi S., Hosono H.

    Meeting abstracts of the Physical Society of Japan   68 ( 1 )   1012 - 1012   2013.3

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  • 29aXY-2 Magnetic ground state of single crystals of Cd_2Os_2O_7 studied by μSR

    Koda A., Miyazaki M., Hiraishi M., Yamauchi I., Kojima K. M., Kadono R., Yamaura J., Hiroi Z.

    Meeting abstracts of the Physical Society of Japan   68 ( 1 )   696 - 696   2013.3

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  • 27pXJ-1 Bulk superconductivity and surface magnetism in non-doped T'-phase cuprate thin film

    Kojima K. M., Kadono R., Hiraishi M., Miyazaki M., Koda A., Suter Andreas, Luetkens Hubertus, Krockenberger Yoshiharu, Yamamoto H., Ikeda A., Naito M.

    Meeting abstracts of the Physical Society of Japan   68 ( 1 )   654 - 654   2013.3

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  • 28pXJ-12 Carrier doping effect in spin-orbit Mott insulator Ba_2IrO_4 probed by μSR

    Okabe H., Isobe M., Takayama-Muromachi E., Koda A., Hiraishi M., Miyazaki M., Kadono R., Miyake Y., Akimitsu J.

    Meeting abstracts of the Physical Society of Japan   68 ( 1 )   677 - 677   2013.3

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  • 27aXZE-3 Magnetic ground state of second superconducting dome in LaFeAsO_<1-x>H_x studied by μSR

    Hiraishi M., Kojima K. M., Kadono R., Koda A., Miyazaki M., Iimura S., Matsuishi S., Hosono H.

    Meeting abstracts of the Physical Society of Japan   68 ( 1 )   606 - 606   2013.3

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  • 29pXY-9 Magnetic properties of the spinel AYb_2S_4(A=Cd,Mg) probed by μSR

    Higemoto W., Ito T. U., Koda A., Iritani K., Halim Mario, Nakatsuji S.

    Meeting abstracts of the Physical Society of Japan   68 ( 1 )   727 - 727   2013.3

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  • 29aPS-89 Magnetic-field-induced magnetism in (Bi,Pb)2201 studied by μSR (II)

    Myazaki M., Hiraishi M., Koda A., Kojima K. M., Kadono R., Fukunaga Y., Tanabe Y., Adachi T., Koike Y.

    Meeting abstracts of the Physical Society of Japan   68 ( 1 )   703 - 703   2013.3

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  • Designing of the magnetic field probe for muonium HFS at J-PARC MLF

    Mizutani T., Kamigaito O., Kawamura N., Kanda S., Kume T., Koda A., Kojima K., Saito N., Sakamoto N., Sasaki K., Shimomura K., Aoki M., Sugano M., Suda K., Tajima M., Tanaka K.S., Tanaka K., Tomono D., Toyoda A., Torii H.A., Torikai E., Nagamine K., Iinuma H., Nishiyama K., Strasser P., Fukao Y., Fujiwara Y., Matsuda Y., Mibe T., Miyake Y., Yoshida M., Ikedo Y., Ishida K., Iwasaki M., Ohkubo R., Ogitsu T., Kadono R.

    Meeting Abstracts of the Physical Society of Japan   68 ( 0 )   15 - 15   2013

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    DOI: 10.11316/jpsgaiyo.68.2.1.0_15_2

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  • 21pGB-2 Disappearance of magnetism at high doping regime (x〜1) of La_<2-x>Sr_xNiO_4 and its magnetic phase diagram

    Kojima K. M., Yamasaki Y., Miyazaki M., Hiraishi M., Koda A., Kadono R., Uchida M., Tokura Y.

    Meeting abstracts of the Physical Society of Japan   67 ( 2 )   608 - 608   2012.8

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  • 20pAG-13 Development of TDC-FPGA Code for Improvement of μSR Spectrometer at J-PARC/MLF and its Test

    Kojima K. M., Fukao Y., Kanda S., Suzuki S. Y., Koda A., Miyazaki M., Hiraishi M., Kadono R., Saito N., Murakami T., Ikeno M., Saito M., Uchida T., Tanaka M.

    Meeting abstracts of the Physical Society of Japan   67 ( 2 )   876 - 876   2012.8

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  • 20pAG-9 Super Omega muon beamline at MLF/J-PARC VI

    Ikedo Y., Miyake Y., Shimomura K., Strasser Patrick, Kawamura N., Nishiyama K., Makimura S., Fujimori H., Koda A., Nakamura J., Nagatomo T., Adachi T., Ogitsu T., Makida Y., Yoshida M., Sasaki K., Okamura T., Ohata H., Nakamoto T., Yamamoto A., Ohkubo R., Higemoto W.

    Meeting abstracts of the Physical Society of Japan   67 ( 2 )   875 - 875   2012.8

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  • 20aAH-7 Muon spin relaxation in high-pressure phases of SiO2 : Stishovite, Coesite

    Kojima K. M., Miyazaki M., Hiraishi M., Koda A., Kadono R., Wakabayashi D., Sato T., Funamori M., Taniguchi T., Tomono D., Matsuzaki T.

    Meeting abstracts of the Physical Society of Japan   67 ( 2 )   871 - 871   2012.8

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  • 20aFE-1 New analytical method by GL model for internal field destribution due to flux line lattice state in type-II superconductors

    Hiraishi M., Kadono R., Miyazaki M., Koda A., Kojima K. M., Brandt E. H.

    Meeting abstracts of the Physical Society of Japan   67 ( 2 )   494 - 494   2012.8

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  • 18aGA-3 Magnetic ground state of single crystals of Cd_2Os_2O_7 studied by μSR

    Koda A., Miyazaki M., Hiraishi M., Kojima K.M., Kadono R., Yamaura J., Hiroi Z.

    Meeting abstracts of the Physical Society of Japan   67 ( 2 )   447 - 447   2012.8

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  • 27aYF-7 superconducting and magnetise property of a spinel superconductor (Cu, Zn) Ir2S4 : a μSR study

    Kojima K. M., Miyazaki M., Hiraishi M., Koda A., Kadono R., Tsuchiya Y., Suzuki H., Kitazawa H.

    Meeting abstracts of the Physical Society of Japan   67 ( 1 )   690 - 690   2012.3

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  • 24aYH-3 Magnetic-field-induced magnetism in (Bi,Pb)2201 studied by μSR

    Miyazaki M., Hiraishi M., Koda A., Kojima K. M., Kadono R., Fukunaga Y., Tanabe Y., Adachi T., Koike Y.

    Meeting abstracts of the Physical Society of Japan   67 ( 1 )   552 - 552   2012.3

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  • 26pYF-4 Spin fluctuation and heavy fermion state in itinerant pyrochlore magnet YMn_2Zn_<20-x>In_x

    Miyazaki M., Kadono R., Hiraishi M., Koda A., Kojima K. M., Okamoto Y., Hiroi Z.

    Meeting abstracts of the Physical Society of Japan   67 ( 1 )   671 - 671   2012.3

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  • 25aCL-3 Precision measurements of muonium HFS and muon magnetic moment

    Fukao Y., Aoki M., Ogitsu T., Kadono R., Kamigaito O., Kawamura N., Koda A., Kojima K., Saito N., Sasaki K., Shimomura K., Sugano M., Strasser P., Tajima M., Tanaka K. S., Tomono D., Toyoda A., Torii H. A., Matsuda Y., Mibe T., Miyake Y.

    Meeting abstracts of the Physical Society of Japan   67 ( 1 )   993 - 993   2012.3

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  • 25pYA-17 Coexistence and competition of superconductivity and magnetism in Fe-based superconductors Ba(Fe_<1-x>Co_x)_2As_2

    Hiraishi M., Kadono R., Miyazaki M., Koda A., Kojima K. M., Ibuka S., Nambu Y., Sato T. J.

    Meeting abstracts of the Physical Society of Japan   67 ( 1 )   636 - 636   2012.3

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  • LiV2O4における擬一次元的スピンゆらぎと重い電子状態

    門野良典, 幸田章宏, 髭本亘, 大石一城, 植田浩明, 野原実, 浦野千春, 近藤真一郎, 高木英典

    日本物理学会講演概要集   66 ( 2 )   569   2011.8

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  • 24pGD-4 _μSR study of novel spin-orbit Mott insulator Ba_2IrO_4 II

    Okabe H., Isobe M., Takayama-Muromachi E., Koda A., Takeshita S., Hiraishi M., Miyazaki M., Kadono R., Miyake Y., Akimitsu J.

    Meeting abstracts of the Physical Society of Japan   66 ( 2 )   651 - 651   2011.8

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  • 22aGB-12 Phase separation of anomalous metallic phase and normal metallic phase of oxygen controlled (Bi,Pb)2201 studied by muon Knight shift

    Miyazaki M., Hiraishi M., Koda A., Kojima K. M., Kadono R., Fukunaga Y., Tanabe Y., Adachi T., Koike Y.

    Meeting abstracts of the Physical Society of Japan   66 ( 2 )   491 - 491   2011.8

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  • ボルボサイトCu3V2O7(OH)2・2H2Oの強磁場中ミュオンスピン回転による磁場誘起磁気相転移の研究 II

    KODA AKIHIRO, MIYAZAKI MASANORI, HIRAISHI MASATOSHI, KOJIMA KENJI, KADONO RYOSUKE, YOSHIDA HIROYUKI, OKAMOTO YOSHIHIKO, HIROI ZENJI

    日本物理学会講演概要集   66 ( 2 )   409   2011.8

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  • 26aED-13 Pseudogap state of oxygen-doped (Bi,Pb)2201 studied by muon Knight shift

    Miyazaki M., Hiraishi M., Koda A., Kojima K.M., Kadono R., Fukunaga Y., Tanabe Y., Adachi T., Koike Y.

    Meeting abstracts of the Physical Society of Japan   66 ( 1 )   586 - 586   2011.3

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  • ボルボサイトCu3V2O7(OH)2・2H2Oの強磁場中ミュオンスピン回転による磁場誘起磁気相転移の研究

    KODA AKIHIRO, MIYAZAKI MASANORI, HIRAISHI MASATOSHI, KOJIMA KENJI, KADONO RYOSUKE, YOSHIDA HIROYUKI, OKAMOTO YOSHIHIKO, HIROI ZENJI

    日本物理学会講演概要集   66 ( 1 )   474   2011.3

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  • 26pEF-6 μSR study of novel spin-orbit Mott insulator Ba_2IrO_4

    Okabe H., Isobe M., Takayama-Muromachi E., Koda A., Takeshita S., Hiraishi M., Miyazaki M., Kadono R., Miyake Y., Akimitsu J.

    Meeting abstracts of the Physical Society of Japan   66 ( 1 )   608 - 608   2011.3

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  • Hydrothermal synthesis of frustrated S = 3/2 honeycomb lattice antiferromagnet Bi_3Mn_4O_<12>(NO_3)

    ONISHI Nozomi, OKA Kengo, AZUMA Masaki, SHIMAKAWA Yuichi, KUMADA Nobuhiro, KODA Akihiro, KADONO Ryosuke

    51   118 - 118   2010.10

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  • Detectors for Muon Experiments at J-PARC/MLF

    KODA Akihiro, STRASSER Patrick

    Ionizing radiation.   36 ( 3 )   151 - 157   2010.9

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  • 24pXP-8 Low-temperature secondary magnetic phase in spin orbital Mott insulator Sr_2IrO_4 and Sr_3Ir_2O_7 observered by muon spin rotation

    Miyazaki M., Kadono R., Hiraishi M., Koda A., Kojima K. M., Ohashi K., Takayama T., Takagi H.

    Meeting abstracts of the Physical Society of Japan   65 ( 2 )   576 - 576   2010.8

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  • 24aWZ-3 Development of the μSR detector utilizing MPPC

    Koda A., Miyazaki M., Hiraishi M., Kojima K. M., Kadono R., Tanaka M., Ikeno M., Uchida T., Saito M., Suzuki S., Takeshita S.

    Meeting abstracts of the Physical Society of Japan   65 ( 2 )   897 - 897   2010.8

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  • 20aGH-13 Field induced magnetism in 122 series of Fe-based superconductors studied by muon spin relaxation

    Hiraishi M., Kadono R., Miyazaki M., Koda A., Kojima K. M., Okabe H., Akimitsu J.

    Meeting abstracts of the Physical Society of Japan   65 ( 1 )   537 - 537   2010.3

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  • 21pGE-11 Magnetic ground state and metal-insulator transition on novel material Rh pyrochore Tl_2Rh_2O_7 studied by μSR

    Miyazaki M., Kadono R., Hiraishi M., Koda A., Yamamoto A., Takagi H.

    Meeting abstracts of the Physical Society of Japan   65 ( 1 )   628 - 628   2010.3

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  • 23aHT-6 Present status of the computing environment for the experimental instruments in J-PARC/MLF

    Nakatani Takeshi, Inamura Yasuhiro, Ito Takayoshi, Kajimoto Ryoichi, Hario Stefanus, Ohhara Takashi, Otomo Toshiya, Suzuki Jiro, Muto Suguru, Yasu Yoshiji, Koda Akihiro, Yonemura Masao, Hosoya Takaaki

    Meeting abstracts of the Physical Society of Japan   65 ( 1 )   1011 - 1011   2010.3

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  • 23pGE-5 Correlation between effective mass of conduction electrons and local spin fluctuation in (Y,Sc)Mn_2

    Miyazaki M., Kadono R., Hiraishi M., Masuda T., Koda A., Nakamura H.

    Meeting abstracts of the Physical Society of Japan   65 ( 1 )   682 - 682   2010.3

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  • High transverse field mu SR with pi/2-RF pulse spin control technique

    R. Kadono, K. H. Satoh, A. Koda, K. Nishiyama, M. Mihara

    PHYSICA B-CONDENSED MATTER   404 ( 5-7 )   996 - 998   2009.4

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  • 30pTD-4 Li-intercalated layered superconductor Li_xZrNCl studied by muon spin rotation

    Hiraishi M., Kadono R., Miyazaki M., Takeshita S., Koda A., Taguchi Y., Kasahara Y., Takano T., Kishiume T., Iwasa Y.

    Meeting abstracts of the Physical Society of Japan   64 ( 1 )   664 - 664   2009.3

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  • 27pVL-7 Pseudogap state of underdoped (Bi,Pb) 2201 studied by muon Knight shift

    Miyazaki M., Hiraishi M., Satoh K. H., Takeshita S., Koda A., Kadono R., Fukunaga Y., Tanabe Y., Adachi T., Koike Y.

    Meeting abstracts of the Physical Society of Japan   64 ( 1 )   565 - 565   2009.3

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  • 27pVL-9 Magnetic Field Induced Magnetism in Cuprate Superconductor Ca_<2-x>Na_xCuO_2Cl_2 II

    Ohishi K, Yamada I, Koda A, Kadono R, Saha S. R, Higemoto W, Kojima K. M, Azuma M, Takano M

    Meeting abstracts of the Physical Society of Japan   64 ( 1 )   566 - 566   2009.3

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  • 29pVL-8 Magnetic ground state of metallic pyrochlore Ca_2Ru_2O_7 probed by μSR

    Miyazaki M., Kadono R., Hiraishi M., Takeshita S., Koda A., Yamamoto F., Takagi H.

    Meeting abstracts of the Physical Society of Japan   64 ( 1 )   639 - 639   2009.3

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  • 30aTC-7 Superconductivity and Magnetism on Ca(Fe,Co)AsF and (Ba,K)Fe_2As_2 Probed by μSR

    Takeshita S., Hiraishi M., Miyazaki M., Koda A., Kadono R., Okabe H., Akimitsu J., Matsuishi S., Kamihara Y., Hosono H.

    Meeting abstracts of the Physical Society of Japan   64 ( 1 )   649 - 649   2009.3

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  • 27pSJ-3 J-PARCミュオン施設における超伝導ミュオンチャネルの建設 : 陽子1次ビームライン機器を中心として(27pSJ 複合測定器系・加速器・ターゲット,実験核物理領域)

    幸田章宏, 河村 成肇, 牧村 俊助, Strasser Patrick, 藤森 寛, 下村 浩一郎, 加藤 岑生, 竹下 聡史, 中原 一隆, 西山 樟生, 三宅 康博, 明午 伸一郎, 佐藤 伸彦, 舟橋 義聖, 上野 健治, 永嶺 謙忠

    日本物理学会講演概要集, 2009   64 ( 1 )   67 - 67   2009

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  • 22pYA-14 Coexistence of Magnetism and Superconductivity in La(O_<0.94>F_<0.06>) FeAs Probed by μSR

    Takeshita S., Hiraishi M., Miyazaki M., Koda A., Kadono R., Kamihara Y., Hosono H.

    Meeting abstracts of the Physical Society of Japan   63 ( 2 )   564 - 564   2008.8

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  • 22aQC-10 Metal-insulator-transition and formation of Haldane chains in pyrochlore oxide Tl_2Ru_2O_7

    Hiraishi M., Kadono R., Miyazaki M., Takeshita S., Koda A., Yamamoto A., Takagi H.

    Meeting abstracts of the Physical Society of Japan   63 ( 2 )   540 - 540   2008.8

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  • 22aQC-9 Magnetic Ground State of Insulating phase in Pyrochlore-oxide Cd_2Ru_2O_7

    Miyazaki M., Kadono R., Hiraishi M., Takeshita S., Koda A., Yamamoto A., Takagi H.

    Meeting abstracts of the Physical Society of Japan   63 ( 2 )   539 - 539   2008.8

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  • 22pQA-10 Magnetic Ground State of β-Sr_<0.33>V_2O_5 probed by μSR

    Takeshita S., Hiraishi M., Miyazaki M., Koda A., Kadono R., Yamauchi T., Ueda H., Ueda Y.

    Meeting abstracts of the Physical Society of Japan   63 ( 2 )   548 - 548   2008.8

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  • 24pWQ-4 μSRによるCuサイト置換Bi2201における磁気秩序の探査(24pWQ 高温超伝導(不純物置換,同位体効果),領域8(強相関係:高温超伝導,強相関f電子系など))

    平賀 晴弘, 山田 和芳, 足立 匡, 福永 泰, 小池 洋二, 山田 幾也, 宮崎 正範, 平石 雅俊, 佐藤 宏樹, 竹下 聡史, 幸田 章宏, 門野 良典

    日本物理学会講演概要集   63 ( 1 )   606 - 606   2008.2

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  • 23aYF-2 Bottleneck process in the hydrogen kinetics of H-storage material NaAlH_4 : Discovery of hydrogen bonding

    Kadono R., Shimomura K., Sato K.H., Takeshita S., Koda A., Nishiyama K., Akiba E., Ayabe R.M., Kuba M., Jensen C.M.

    Meeting abstracts of the Physical Society of Japan   63 ( 1 )   913 - 913   2008.2

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  • 26pYB-3 Muon Knight-shift measurement in Quasi-1D Conductor β-A_<0.33>V_2O_5

    Takeshita S., Hiraishi M., Miyazaki M., Satoh K.H., Koda A., Kadono R., Tanabe M., Ohno T., Yamauchi T., Ueda H., Ueda Y.

    Meeting abstracts of the Physical Society of Japan   63 ( 1 )   644 - 644   2008.2

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  • 24aPS-4 μSR study of magnetic ground state and superconductivity in Bi2201

    Miyazaki M., Satoh K.H., Hiraishi M., Takeshita S., Koda A., Kadono R., Fukunaga Y., Adachi T., Koike Y., Hiraka H., Yamada K.

    Meeting abstracts of the Physical Society of Japan   63 ( 1 )   571 - 571   2008.2

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  • 24aWQ-4 Anomalous antiferromagnetic order in pyrochlore oxide Hg_2Ru_2O_7

    Satoh K.H., Hiraishi M., Miyazaki M., Takeshita S., Koda A., Kadono R., Yamamoto A., Takagi H.

    Meeting abstracts of the Physical Society of Japan   63 ( 1 )   563 - 563   2008.2

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  • 23pYB-3 Li-intercalated layered superconductor Li_xZrNCl studied by muon spin relaxation

    Hiraishi M., Miyazaki M., Takeshita S., Satoh K.H., Koda A., Kadono R., Taguchi Y., Takano T., Iwasa Y.

    Meeting abstracts of the Physical Society of Japan   63 ( 1 )   529 - 529   2008.2

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  • Coexistence of Supercondcutivity and Magnetism in LaFeAs(O0.94F0.06) Probed by Muon Spin Relaxation

    Takeshita Soshi, Kadono Ryosuke, Hiraishi Masatoshi, Miyazaki Masanori, Koda Akihiro, Kamihara Yoichi, Hosono Hideo

    J Phys Soc Jpn   77 ( 10 )   103703-1-4 - 103703-4   2008

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    The presence of macroscopic phase separation into superconducting and spin-glass-like magnetic phases in LaFeAs(O1-xFx) is demonstrated by muon spin rotation measurement in a sample near the phase boundary ($x=0.06$). Both magnetism and superconductivity develop simultaneously below a common critical temperature, $T_{\text{m } }\simeq T_{\text{c } }\simeq 18$ K. This remarkable accordance strongly suggests that the electronic correlations leading to these two competing ground states share a common origin.

    DOI: 10.1143/JPSJ.77.103703

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  • 22pWH-5 Anisotropic Superconductivity in KOs_2O_6 Probed by μSR-IV

    Kadono R, Koda A, Sato K. H, Takeshita S, Ohishi K, Higemoto W, Saha S. R, Yonezawa S, Yamaura J, Hiroi Z, Muraoka Y

    Meeting abstracts of the Physical Society of Japan   62 ( 2 )   607 - 607   2007.8

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  • 20pWG-10 Electronic State of Quasi-1D Conductor β-Na_<0.33>V_2O_5 Probed by Muon Spin Rotation

    Takeshita S., Satoh K.H., Koda A., Kadono R., Tanabe M., Ohno T., Yamauchi T., Ueda H., Ueda Y.

    Meeting abstracts of the Physical Society of Japan   62 ( 1 )   628 - 628   2007.2

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  • 18pPSA-24 Muon Knight shift measurement in PrFe_4P_<12>

    Higemoto W, Ohishi K, Koda A, Saha S.R, Kadono R, Aoki Y, Sugawara H, Sato H

    Meeting abstracts of the Physical Society of Japan   62 ( 1 )   518 - 518   2007.2

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  • 20aWK-1 低ドープ領域La_<2-x>Sr_xCuO_4における高磁場下のμSR実験(II)(20aWK 高温超伝導(μSR,中性子散乱,NMR),領域8(強相関系:高温超伝導,強相関f電子系など))

    石田 憲二, 中井 祐介, 幸田 章宏, 佐藤 宏樹, 門野 良典, 髭本 亘, 大石 一城, 藤田 全基, 山田 和芳

    日本物理学会講演概要集   62 ( 1 )   2007.2

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  • 18aWF-4 Vortex State of a Boride Superconductor YB_6 Studied by μSR

    Kadono R, Kuroiwa S, Akimitsu J, Koda A, Ohishi K, Higemoto W, Ohtani S

    Meeting abstracts of the Physical Society of Japan   62 ( 1 )   487 - 487   2007.2

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  • 20aWK-5 Carrier dependence of penetration depth on electron-doped cuprate Sr_<1_x>La_xCuO_2

    Satoh K. H, Koda A, Kadono R, Ishida K, Pyon S, Sasagawa T, Takagi H

    Meeting abstracts of the Physical Society of Japan   62 ( 1 )   610 - 610   2007.2

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  • 19aPS-84 Anisotropic quasiparticle excitation of pyrochlore oxide superconductor AOs_2O_6(A=K,Rb,Cs) studied by μSR

    Koda A, Satoh K.H, Takeshita S, Kadono R, Ohishi K, Higemoto W, Saha S.R, Kawasaki Y, Minami T, Yonezawa S, Hiroi Z, Muraoka Y

    Meeting abstracts of the Physical Society of Japan   62 ( 1 )   575 - 575   2007.2

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  • Magnetic correlations and superconductivity in La<inf>1.93</inf> Sr<inf>0.07</inf> CuO<inf>4</inf> revealed by μSR

    Ishida, K., Higemoto, W., Ohishi, K., Koda, A., Satoh, K.H., Kadono, R., Fujita, M., Yamada, K.

    Journal of Magnetism and Magnetic Materials   310 ( 2 SUPPL. PART 1 )   526 - 528   2007

  • Magnetism and superconductivity in CePt <inf>3</inf>Si probed by muon spin relaxation

    Wataru Higemoto, Yoshinori Haga, Tatsuma D. Matsuda, Yoshichika Onuki, Yoshichika Onuki, Akihiro Koda, Shanta R. Saha, Shanta R. Saha, Kazuki Offishi, Kazuki Offishi, Ryosuke Kadono, Ryosuke Kadono

    Journal of the Physical Society of Japan   75   180 - 182   2006.12

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    DOI: 10.1143/JPSJS.75S.180

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  • Possible unconventional superconductivity and magnetism in CePt <inf>3</inf>Si probed by muon spin rotation and relaxation

    Higemoto, W., Haga, Y., Matsuda, T.D., Onuki, Y., Ohishi, K., Ito, T., U, Koda, A., Saha, S.R., Kadono, R.

    Journal of the Physical Society of Japan   75 ( 12 )   1 - 124713   2006.12

  • 25aZL-6 Magnetic penetration depth and Uemura-plot on infinine-layer cuprate Sr_<1-x>La_xCuO_2

    Satoh K.H, Koda A, Kadono R, Ishida K, Pyon S, Sasagawa T, Takagi H

    Meeting abstracts of the Physical Society of Japan   61 ( 2 )   489 - 489   2006.8

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  • 24pZL-2 Observation of the Spontaneous Field in the Superconducting State on a Ru-Sr_2RuO_4 Eutectic Sample

    Ishida K, Murakawa H, Yaguchi H, Maeno Y, Higemoto W, Ohishi K, Koda A, Kadono R

    Meeting abstracts of the Physical Society of Japan   61 ( 2 )   470 - 470   2006.8

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  • 28aTD-8 Phase separation on infinine-layer cuprate Sr_<1-x>La_xCuO_2 probed by muon spin relaxation and rotation

    Satoh K.H, Koda A, Kadono R, Ishida K, Pyon S, Sasagawa T, Takagi H

    Meeting abstracts of the Physical Society of Japan   61 ( 1 )   572 - 572   2006.3

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  • 28aTD-10 低ドープ領域La_<2-x>Sr_xCuO_4における高磁場下のμSR実験(28aTD 高温超伝導(中性子,X線,μSR,NMR),領域8(強相関系:高温超伝導,強相関f電子系など))

    石田 憲二, 幸田 章宏, 佐藤 宏樹, 門野 良典, 髭本 亘, 大石 一城, 藤田 全基, 山田 和芳

    日本物理学会講演概要集   61 ( 1 )   2006.3

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  • 27aPS-95 Magnetic and superconducting properties of (MgZn)C_yNi_3 and CdCNi_3

    Yamazaki T, Kori T, Kashida T, Kimishima Y, Uehara M, Oishi K, Koda A, Kadono R

    Meeting abstracts of the Physical Society of Japan   61 ( 1 )   542 - 542   2006.3

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  • 30aUE-8 Magnetic response of vortex state in Nb_3Sn : Vortex lattice transformation and quasipaprticle excitation

    Kadono R, Satoh K.H, Koda A, Nagata T, Kawano-Furukawa H, Suzuki J, Matsuda M, Ohishi K, Higemoto W, Kuroiwa S, Takagiwa H, Akimitsu J

    Meeting abstracts of the Physical Society of Japan   61 ( 1 )   648 - 648   2006.3

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  • 29pPSA-41 μSR study on the magnetic state in UPt_3 at low temperature

    Higemoto W, Satoh K, Ito T.U, Nishida N, Ohishi K, Heffner R.H, Haga Y, Yamamoto E, Kimura Y, Onuki Y, Koda A, Kadono R

    Meeting abstracts of the Physical Society of Japan   61 ( 1 )   638 - 638   2006.3

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  • 28pPSA-12 μSR study on field-insensitive heavy-fermion SmOs_4Sb_<12>

    Tsunashima Y, Yonezawa Y, Aoki Y, Higemoto W, Sato H, Koda A, Ito T, Ohishi K, Heffner Robert, Kikuchi D, Sato H

    Meeting abstracts of the Physical Society of Japan   61 ( 1 )   600 - 600   2006.3

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  • 27aTD-5 Correlation between Crystal Structure with/without Superlattice and Superconducting Properties in CaAlSi

    Kuroiwa S, Akimitsu J, Koda A, Sato K, Kadono R, Saha S.R, Sagayama H, Sawa H, Ohishi K, Higemoto W, Noda Y

    Meeting abstracts of the Physical Society of Japan   61 ( 1 )   510 - 510   2006.3

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    DOI: 10.1103/PhysRevB.74.014517

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  • 21pPSB-10 Impurity Effect in TiOBr Probed by Muon Spin Relaxation

    Yamazawa M, Sasaki T, Kuroiwa S, Takahashi K, Nishihata Y, Akimitsu J, Koda A, Kadono R, Ohishi K, Higemoto W

    Meeting abstracts of the Physical Society of Japan   60 ( 2 )   330 - 330   2005.8

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  • 20aPS-16 Magnetic Field Induced Magnetism in Cuprate Superconductor Ca_<2-x>Na_xCuO_2Cl_2

    Ohishi K, Yamada I, Koda A, Saha S. R, Higemoto W, Kadono R, Kojima K. M, Azuma M, Takano M

    Meeting abstracts of the Physical Society of Japan   60 ( 2 )   431 - 431   2005.8

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  • 20aPS-99 Superconducting Order Parameter in Ca(Al_<0.5>Si_<0.5>_2 Probed by Muon Spin Rotation/Relaxation

    Kuroiwa S, Takagiwa H, Yamazawa M, Tomita Y, Akimitsu J, Saha S. R, Koda A, Kadono R, Sagayama H, Sawa H, Ohishi K, Higemoto W, Noda Y

    Meeting abstracts of the Physical Society of Japan   60 ( 2 )   450 - 450   2005.8

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  • 19aYJ-4 Staggered magnetism in LiV_2O_4 at low temperatures probed by the muon Knight shift

    Koda A, Kadono R, Ohishi K, Saha S. R, Higemoto W, Matsushita Y, Ueda H, Ueda H

    Meeting abstracts of the Physical Society of Japan   60 ( 2 )   367 - 367   2005.8

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  • 19aYJ-10 Anisotropic quasiparticle excitation of the pyrochlore superconductor AOs_2O_6 (A=K, Rb, Cs) studied by μSR

    Koda A, Sato K. H, Kadono R, Ohishi K, Higemoto W, Saha S. R, Kawasaki Y, Minami T, Yonezawa S, Muraoka Y, Hiroi Z

    Meeting abstracts of the Physical Society of Japan   60 ( 2 )   368 - 368   2005.8

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  • 19aXD-5 Magnetic Phase diagram in Sm_<2-x>Ce_xCuO_4

    Unozawa K, Sasagawa T, Ohishi K, Pyon S, Sato H, Koda A, Ito T, Higemoto W, Heffner R. H, Kadono R, Takagi H

    Meeting abstracts of the Physical Society of Japan   60 ( 2 )   356 - 356   2005.8

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  • 19aYG-4 Effect of La substitution for PrOs_4Sb_<12> probed by muon Knight shift

    Higemoto W, Aoki Y, Ohishi K, Ito T, Heffner R. H, Koda A, Kadono R, Kikuchi D, Sugawara H, Sato H

    Meeting abstracts of the Physical Society of Japan   60 ( 2 )   361 - 361   2005.8

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  • 25aPS-42 μSR study on the superconducting state of Pr_xLa_<1-x>Os_4Sb_<12>

    Tunaahima Y, Aoki Y, Higemoto W, Sanada S, Yonezawa Y, Sana S.R, Ohishi K, Koda A, Nishiyama K, Kadono R, Kikuchi D, Sugawara H, Sato H

    Meeting abstracts of the Physical Society of Japan   60 ( 1 )   531 - 531   2005.3

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  • 25aWA-4 Field-induced Magnetism in the superconducting state of electron-doped cuprate Pr_<1-x>LaCe_xCuO_4

    Kadono R, Ohishi K, Koda A, Saha S R, Higemoto W, Fujita M, Yamada K

    Meeting abstracts of the Physical Society of Japan   60 ( 1 )   513 - 513   2005.3

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  • 25pTA-14 μSR study of anomalous phase transitions and Knight shifts in CeOs_4Sb_<12> and PrRu_4P_<12>

    Saha R., Koda A., Ohishi K., Kadono R., Higemoto W., Aoki Y., Sugawara H., Sato H.

    Meeting abstracts of the Physical Society of Japan   60 ( 1 )   551 - 551   2005.3

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  • 24pPSB-33 Magnetic Ordering in Molecular Magnets Probed by μSR III

    Ohishi K, Higemoto W, Koda A, Saha S.R, Kadono R, Inoue K, Higashikawa H, Yoshida Y

    Meeting abstracts of the Physical Society of Japan   60 ( 1 )   446 - 446   2005.3

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  • 25aPS-58 Magnetism and Superconductivity on CePt_3Si probed by it μSR

    Higemoto W, Haga Y, Matsuda T.D, Onuki Y, Koda A, Ohishi K, Saha S.R, Kadono R

    Meeting abstracts of the Physical Society of Japan   60 ( 1 )   535 - 535   2005.3

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  • 25pPSA-69 Magnetic properties of Mg_<1-x>Zn_xCyNi_3

    Yamazaki T, Kori T, Kimishima Y, Uehara M, Oishi K, Koda A, Higemoto W, Kadono R

    Meeting abstracts of the Physical Society of Japan   60 ( 1 )   577 - 577   2005.3

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  • 27aTA-5 Anisotropic quasiparticle excitation of the pyrochlore superconductor AOs_2O_6(A=K, Rb. Cs) studied by μSR

    Koda A, Ohishi K, Saha S.R, Kadono R, Higemoto W, Yonezawa S, Muraoka Y, Hiroi Z

    Meeting abstracts of the Physical Society of Japan   60 ( 1 )   596 - 596   2005.3

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  • 25aWA-8 低ドープ領域La_<2-x>Sr_xCuO_4(x=0.07)における超伝導と磁性の共存(II)(μSR実験)(高温超伝導(磁気励起,1/8問題),領域8(強相関系:高温超伝導,強相関f電子系など))

    石田 憲二, 髭本 亘, 門野 良典, 幸田 章宏, 大石 一城, 藤田 全基, 山田 和芳

    日本物理学会講演概要集   60 ( 1 )   2005.3

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  • LiV2O4は重い電子系か?--μ+SR法で見たLiV2O4

    幸田 章宏, 門野 良典, 植田 浩明

    固体物理   40 ( 3 )   199 - 208   2005.3

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  • Coexistence of long-range order and spin fluctuation in geometrically frustrated clinoatacamite Cu2Cl(OH)3 Reviewed

    Zheng, X.G., Kubozono, H., Nishiyama, K., Higemoto, W., Kawae, T., Koda, A., Xu, C.N.

    Physical Review Letters   95 ( 5 )   057201-1-057201-4   2005

  • 13pRB-3 Metal-insulator transition of pyrochlore oxide Cd_2Os_2O_7 A μSR study

    Koda A, Ohishi K, Saha S R, Kadono R, Higemoto W, Yonezawa S, Muraoka Y, Hiroi Z

    Meeting abstracts of the Physical Society of Japan   59 ( 2 )   492 - 492   2004.8

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  • 14aRD-3 低ドープ領域 La_<2-x>Sr_xCuO_4(x=0.07) における超伝導と磁性の共存(μ SR 実験)(高温超伝導 : 不均一性・不純物効果, 領域 8)

    石田 憲二, 髭本 亘, 門野 良典, 幸田 章宏, 大石 一城, 藤田 全基, 山田 和芳

    日本物理学会講演概要集   59 ( 2 )   2004.8

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  • 14pPSA-65 μSR study in skutterudite PrRu_4P_<12> and CeOs_4Sb_<12>

    Saha S. R, Higemoto W, Koda A, Ohishi K, Kadono R, Aoki K, Sugawara H, Sato H

    Meeting abstracts of the Physical Society of Japan   59 ( 2 )   559 - 559   2004.8

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  • 14pPSA-52 μSR study on the superconducting state of Pr_xLa_<1-x>Os_4Sb_<12>

    Tunashima Y, Aoki Y, Higemoto W, Sanada S, Saha S. R, Ohishi K, Koda A, Nishiyama K, Kadono R, Sugawara H, Sato H

    Meeting abstracts of the Physical Society of Japan   59 ( 2 )   556 - 556   2004.8

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  • 13aPS-117 μSR study of diboride superconductor NbB_<2+x>

    Takagiwa H, Kuroiwa S, Yamazawa M, Akimitsu J, Ohishi K, Koda A, Higemoto W, Kadono R

    Meeting abstracts of the Physical Society of Japan   59 ( 2 )   487 - 487   2004.8

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  • 13aPS-118 The flux line lattice state in typical type II superconductor YB_6 probed by muon spin rotation

    Kuroiwa S, Takagiwa H, Yamazawa M, Akimitsu J, Ohishi K, Koda A, Kadono R, Higemoto W, Ohtani S

    Meeting abstracts of the Physical Society of Japan   59 ( 2 )   488 - 488   2004.8

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  • 12aRA-3 Muon Spin Rotation Measurement on PrOs_4Sb_<12>

    Higemoto W, Aoki Y, Saha S R, Ohishi K, Koda A, Kadono R, Sugawara H, Sato H

    Meeting abstracts of the Physical Society of Japan   59 ( 2 )   414 - 414   2004.8

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  • 30aXC-4 Anisotropic order parameter of the novel pyrochlore superconductor KOs_2O_6

    Koda A, Kadono R, Saha S R, Ohishi K, Higemoto W, Yonezawa S, Muraoka Y, Matsushita Y, Hiroi Z

    Meeting abstracts of the Physical Society of Japan   59 ( 1 )   640 - 640   2004.3

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  • 30pXE-5 μSR study on the metal-insulator transition and ground state in filled skutterudite PrRu_4P_<12>

    Saha S. R., Higemoto W., Koda A., Ohishi K., Kadono R., Aoki Y., Sugawara H., Sato H.

    Meeting abstracts of the Physical Society of Japan   59 ( 1 )   653 - 653   2004.3

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  • 30aXE-5 μSR study on heavy fermion superconductor PrOs_4Sb_<12> II

    Aoki Y, Higemoto W, Sanada S, Tuchiya A, Saha S R, Sugawara H, Sato H, Koda A, Ohishi K, Nishiyama K, Kadono R

    Meeting abstracts of the Physical Society of Japan   59 ( 1 )   646 - 646   2004.3

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    DOI: 10.1016/j.jmmm.2003.12.710

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  • 28aXC-10 Magnetism and Superconductivity in Na_xCoO_2・yH_2O probed by μSR II

    Higemoto W, Ohishi K, Koda A, Saha S. R, Kadono R, Ishida K, Sakurai H, Takada K, Takayama-Muromachi E, Sasaki T

    Meeting abstracts of the Physical Society of Japan   59 ( 1 )   549 - 549   2004.3

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  • 28aPS-108 Anisotropic energy gap in Ca(Al_<0.5>Si_<0.5>)_2 probed by μSR

    Kuroiwa S, Takagiwa H, Yamazawa M, Akimitsu J, Ohishi K, Koda A, Higemoto W, Kadono R

    Meeting abstracts of the Physical Society of Japan   59 ( 1 )   580 - 580   2004.3

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  • 28aPS-15 Magnetism of Ca_<2-x>Na_xCuO_2Cl_2 Probed by Muon Spin Relaxation

    Ohishi K, Koda A, Higemoto W, Kadono R, Yamada I, Azuma M, Takano M, Kojima K. M

    Meeting abstracts of the Physical Society of Japan   59 ( 1 )   559 - 559   2004.3

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  • 28aPS-98 Magnetic and superconducting properties of MgCNi_3

    Yamazaki T, Takano S, Amano T, Kimishima Y, Uehara M, Oishi K, Koda A, Higemoto W, Kadono R

    Meeting abstracts of the Physical Society of Japan   59 ( 1 )   578 - 578   2004.3

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  • 30aXR-3 μSR Study of S=2 Haldane gap antiferromegnet FePb_4Sb_6Si_<14>

    Koda A, Saha S R, Ohishi K, Higemoto W, Kadono R, Matsushita Y, Ueda Y

    Meeting abstracts of the Physical Society of Japan   59 ( 1 )   506 - 506   2004.3

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  • Magnetic ordering in organic magnets probed by μSR II

    Ohishi K, Koda A, Higemoto W, Kadono R, Inoue K, Imai H

    Meeting abstracts of the Physical Society of Japan   58 ( 2 )   383 - 383   2003.8

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  • Magnetism and Superconductivity in Na_xCoO_2・yH_2O Studied by μSR

    Higemoto W, Kadono R, Koda A, Ohishi K, Takada K, Sakurai H, Muromachi E

    Meeting abstracts of the Physical Society of Japan   58 ( 2 )   546 - 546   2003.8

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  • Superconducting state of PrOs_4Sb_<12> studied by μSR technique

    Aoki Y, Higemoto W, Tuchiya A, Kanayama T, Saha S. R, Sugawara H, Sato H, Koda A, Ohishi K, Nishiyama K, Kadono R

    Meeting abstracts of the Physical Society of Japan   58 ( 2 )   501 - 501   2003.8

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  • Chemical substitution effect on Mg-site of superconducting material MgCNi_3

    Amano T, Yamazaki T, Takano S, Kimishima Y, Uehara M, Oishi K, Koda A, Higemoto W, Kadono R

    Meeting abstracts of the Physical Society of Japan   58 ( 2 )   535 - 535   2003.8

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  • Large vortex core at low magnetic induction in La2-xSrxCuO4 probed by muon spin rotation

    R Kadono, W Higemoto, A Koda, MI Larkin, GM Luke, AT Savici, YJ Uemura, KM Kojima, T Okamoto, T Kakeshita, S Uchida, T Ito, K Oka

    PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS   388   631 - 632   2003.5

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  • μSR study on heavy fermion superconductor PrOs_4Sb_<12>

    Aoki Y, Higemoto W, Tuchiya A, Kanayama T, Saha S. R, Sugawara H, Sato H, Koda A, Ohishi K, Nishiyama K, Kadono R

    Meeting abstracts of the Physical Society of Japan   58 ( 1 )   583 - 583   2003.3

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    DOI: 10.1143/JPSJ.72.1516

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  • μSR Study of the Kagome-Ice State in the Spin-Ice System Dy_2Ti_2O_7

    Koda A, Ohishi K, Higemoto W, Kadono R, Matsuhira K, Takagi S, Hiroi Z, Sakakibara T, Ohira S

    Meeting abstracts of the Physical Society of Japan   58 ( 1 )   507 - 507   2003.3

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  • Spin Dynamics in the Vicinity of Magnetic Quantum Critical Point on Heavy-Fermion compound, YbRh_2Si_2

    Ishida K., Kawasaki Y., Higemoto W., Koda A., Kadono R., Geibel C., Steglich F., MacLaughlin D. E.

    Meeting abstracts of the Physical Society of Japan   58 ( 1 )   585 - 585   2003.3

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  • 29aWA-7 μSR による Ca_<2-x>Na_xCuO_2Cl_2 の磁気相図の研究

    山田 幾也, 東 正樹, 大石 一城, 幸田 章宏, 髭本 亘, 門野 良典, 小嶋 健児, 高野 幹夫

    日本物理学会講演概要集   58 ( 1 )   528 - 528   2003.3

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  • The magnetism in CaB_6probed by μSR III

    Yamamoto Takashi, Takagiwa Hiroyuki, Yamada Masashi, Sasaki Tomoyuki, Akamatsu Akio, Kawaguchi Yoshinobu, Yoshino Tsutomu, Akimitsu Jun, Ohishi Kazuki, Koda Akihiro, Higemoto Wataru, Kadono Ryosuke

    Meeting abstracts of the Physical Society of Japan   58 ( 1 )   2003.3

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  • μSR study of vortex core of Tl_2Ba_2CuO_<6+δ>

    Higemoto W, Ohishi K, Koda A, Kadono R, Matsuda Y, Kakuyanagi K, Kumagai K, Hasegawa M

    Meeting abstracts of the Physical Society of Japan   58 ( 1 )   592 - 592   2003.3

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  • Microscopic structure of flux line lattice and associated quasiparticle excitations in Y(Ni_<1-x>Pt_x)_2B_2C probed byμSR

    Ohishi K, Koda A, Higemoto W, Kadono R, Kakuta K, Akimitsu J, Miller R. I, Price A. N, Kiefl R. F, Sonier J. E, Nohara M, Suzuki H, Takagi H

    Meeting abstracts of the Physical Society of Japan   58 ( 1 )   593 - 593   2003.3

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  • Magnetic ground state and oxygen deficiency in Pr_<0.89>LaCe_<0.11>CuO_<4-δ> studied by μSR

    Kadono R, Ohishi K, Koda A, Higemoto W, Kuroshima S, Fujita M, Yamada K

    Meeting abstracts of the Physical Society of Japan   58 ( 1 )   527 - 527   2003.3

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  • Anomalous quasiparticle excitations in Y(Ni<inf>1-x</inf>Pt<inf>x</inf>)<inf>2</inf>B<inf>2</inf>C

    Ohishi, K., Kakuta, K., Akimitsu, J., Koda, A., Higemoto, W., Kadono, R., Sonier, J.E., Price, A.N., Miller, R.I., Kiefl, R.F., Nohara, M., Suzuki, H., Takagi, H.

    Physica B: Condensed Matter   326 ( 1-4 )   364 - 368   2003.2

  • Physical Properties in Flux Line Lattice State in MgB 2 Probed by μsR

    Kazuki Ohishi, Takahiro Muranaka, Jun Akimitsu, Akihiro Koda, Akihiro Koda, Wataru Higemoto, Wataru Higemoto, Ryosuke Kadono, Ryosuke Kadono, Ryosuke Kadono

    Journal of the Physical Society of Japan   71   335 - 337   2002.12

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  • Large vortex cores in La1.85Sr0.15CuO4 studied by μSR II-Correlation with Sr concentration

    Kadono R, Higemoto W, Koda A, Larkin M.I, Luke G.M, Savici A.T, Uemura Y.J, Kojima K.M, Okamoto T, Uchida S, Ito T, Oka K

    Meeting abstracts of the Physical Society of Japan   57 ( 2 )   494 - 494   2002.8

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  • Magnetic ordering in organic chiral magnets probed by μSR

    Ohishi K, Koda A, Higemoto W, Kadono R, Inoue K

    Meeting abstracts of the Physical Society of Japan   57 ( 2 )   385 - 385   2002.8

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  • mu SR studies on heavy fermion superconductors CeIrIn5 and CeCoIn5

    W Higemoto, A Koda, R Kadono, Y Kawasaki, Y Haga, D Aoki, R Settai, H Shishido, Y Onuki

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   71 ( 4 )   1023 - 1026   2002.4

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  • 25aYH-4 Large vortex cores and field-induced magnetism in La_<1.85>Sr_<0.15>CuO_4 studied by μSR

    Kadono R., Higemoto W., Koda A, Uemura Y.J., Kojima K.M., Kakesita T., Uchida S.

    Meeting abstracts of the Physical Society of Japan   57 ( 1 )   544 - 544   2002.3

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  • 25aPS-48 μSR study of the competitive interahain interaction system BaCu_2(Si_<1-x>Ge_x)_2O_7

    Koda A., Higemoto W., Kadono R., Hiroi Z., Yamada T., Asano T., Nojiri H.

    Meeting abstracts of the Physical Society of Japan   57 ( 1 )   405 - 405   2002.3

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  • 27aWB-1 Si-NMR study of spin fluctuation in YbRh_2Si_2 is located near the QCP

    Okamoto K., Ishida K., Kawasaki Y., Kitaoka Y., Higemoto W., Koda A., Kadono R., Trovarelli O., Geibel C., Steglich F.

    Meeting abstracts of the Physical Society of Japan   57 ( 1 )   578 - 578   2002.3

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  • 24aYK-8 NQR Study of Magnetism of Lightly Doped La_<2-x>Sr_xCuO_4

    Aya H., Tokunaga Y, Ishida K., Kitaoka Y., Koda A, Higemoto W., Kadono R., Fujita M., Yamada K

    Meeting abstracts of the Physical Society of Japan   57 ( 1 )   472 - 472   2002.3

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  • Magnetic penetration depth measurement in Sr_2RuO_4 by μsR

    Higemoto W., Koda A., Kadono R., Yoshida Y., Mukai A., Ohonuki Y.

    Meeting abstracts of the Physical Society of Japan   56 ( 2 )   396 - 396   2001.9

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  • Flux Line State in MgB_2 Probed by μSR

    Ohishi K, Muranaka T, Akimitsu J, Koda A, Higemoto W, Kadono R

    Meeting abstracts of the Physical Society of Japan   56 ( 2 )   464 - 464   2001.9

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  • μSR Study of Magnetic Ordering State in BaVS_3

    Higemoto W., Koda A., Maruta G., Nishiyama K., Giri S., Nakamura H., Shiga M.

    Meeting abstracts of the Physical Society of Japan   56 ( 2 )   358 - 358   2001.9

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  • Quasiparticle excitation in pyrochlore superconductor Cd_2Re_2O_7 proved by μSR

    Kadono R., Higemoto W., Koda A., Kawasaki Y., Hanawa M, Hiroi Z.

    Meeting abstracts of the Physical Society of Japan   56 ( 2 )   463 - 463   2001.9

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  • μSR Studies on heavy fermion superconductor CeCoIn_5

    Higemoto W., Koda A., Kadono R., Kawasaki Y., Shishido H., Settai R., Onuki Y

    Meeting abstracts of the Physical Society of Japan   56 ( 2 )   506 - 506   2001.9

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  • Magnetism of anomalous A-phase in CeCu_2Si_2 : A μSR study III

    Koda A., Higemoto W., Kadono R., Kawasaki Y., Ishida K., Kitaoka Y., Geibel C., Steglich F.

    Meeting abstracts of the Physical Society of Japan   56 ( 2 )   505 - 505   2001.9

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  • μSR Studies on heavy fermion superconductor CeIrIn_5

    Higemoto W., Koda A., Kadono R., Aoki D., Haga Y., Onuki Y.

    Meeting abstracts of the Physical Society of Japan   56 ( 1 )   549 - 549   2001.3

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  • 27aZB-4 CeRu_2の磁束格子状態における高磁場での異常な準粒子励起

    門野 良典, 髭本 亘, 幸田 章宏, 大石 一城, 横尾 哲也, 秋光 純, 辺土 正人, 稲田 佳彦, 大貫 惇睦, 山本 悦嗣, 芳賀 芳範

    日本物理学会講演概要集   56 ( 1 )   2001.3

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  • μSR Study of Quantum Spin Chain, Cu benzoate

    AJIRO Yoshitami, ASANO Takayuki, NOJIRI Hiroyuki, HIGEMOTO Wataru, KODA Akihiro, KADONO Ryosuke

    Meeting abstracts of the Physical Society of Japan   56 ( 1 )   403 - 403   2001.3

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  • Possible nodal vortex state in CeRu<inf>2</inf>

    Kadono, R., Higemoto, W., Koda, A., Ohishi, K., Yokoo, T., Akimitsu, J., Hedo, M., Inada, Y., nuki, Y., Yamamoto, E., Haga, Y.

    Physical Review B - Condensed Matter and Materials Physics   63 ( 22 )   2001

  • μSR studies in the magnetic ordered phase of CuO

    NISHIYAMA Kusuo, Higemoto Wataru, Maruta Goro, Koda Akihiro, Zheng XG

    Meeting abstracts of the Physical Society of Japan   55 ( 2 )   423 - 423   2000.9

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  • Study of megnetism of CeRh_2Si_2 under high pressure probed by μSR

    Higemoto W., Satoh K., Koda A., Shimomura K., Nishiyama K., Koiwai S., Kosaka M., Uwatoko Y., Mohri N.

    Meeting abstracts of the Physical Society of Japan   55 ( 2 )   524 - 524   2000.9

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  • A μSR study of Li_<1-x>Zn_xV_2O_4 II

    Koda A, Higemoto W, Kadono R, Ohishi K, Kakuta K, Akimitsu J, Weda H, Urano C, Nohara M, Takagi H

    Meeting abstracts of the Physical Society of Japan   55 ( 2 )   521 - 521   2000.9

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  • Magnetism of anomalous A-phase in CeCu_2Si_2: A μSR study II

    Koda A., Higemoto W., Kadono R., Kawasaki Y., Ishida K., Kitaoka Y., Geibel C., Steglich F.

    Meeting abstracts of the Physical Society of Japan   55 ( 2 )   475 - 475   2000.9

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  • Studies of superconductivity and magnetism in UPt3 by mu+SR

    W Higemoto, K Satoh, N Nishida, A Koda, K Nagamine, Y Haga, E Yamamoto, N Kimura, Y Onuki

    PHYSICA B   281   984 - 986   2000.6

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  • A μSr study of Li_<1-x>Zn_xV_2O_4

    Koda A, Higemoto W, Kadono R, Ohishi K, Kakuta K, Akimitsu J, Urano C, Nohara M, Takagi H

    Meeting abstracts of the Physical Society of Japan   55 ( 1 )   430 - 430   2000.3

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  • ZF-μSR in Sr_2RuO_4

    Higemoto W., Koda A., Kadono R., Yoshida Y., Mukai A., Onuki Y.

    Meeting abstracts of the Physical Society of Japan   55 ( 1 )   485 - 485   2000.3

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  • Search for Quadrupolar Ordering in CeB_6 by Moun Level-Crossing Resonance (μLCR)

    Kadono R, Koda A, Higemoto W, Ohishi K, Kakuta K, Akimitsu J

    Meeting abstracts of the Physical Society of Japan   55 ( 1 )   507 - 507   2000.3

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  • 25aJ-3 μSR Study of Anomalous Phase Transition in Ucu_2Sn

    Higemoto W, Koda A, Kadono R, Echizen Y, Takabatake T

    Meeting abstracts of the Physical Society of Japan   54 ( 2 )   490 - 490   1999.9

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  • 25pPSA-18 μSR Study of CeCu_2(Si_<1-x>Ge_x)_2

    Higemoto W, Koda A, Kadono R, Ishida K, Kawasaki Y, Kitaoka Y, Geibel C, Steglich F

    Meeting abstracts of the Physical Society of Japan   54 ( 2 )   525 - 525   1999.9

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  • 27aH-12 Magnetism of anomalous A-phase in Ce_<1+x>Cu_<2+y>Si_2: A μSR study

    Koda A, Higemoto W, Kadono Y, Kawasaki Y, Ishida K, Kitaoka Y, Geibel C, Steglich F

    Meeting abstracts of the Physical Society of Japan   54 ( 2 )   570 - 570   1999.9

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  • 30p-P-5 Heat Capacities of UPt_3 under pressures and fields III

    Koda Akihiro, Kobayashi Tatsuo C., Amaya Kiichi, Kimura Noriaki, Onuki Yoshichika

    Meeting abstracts of the Physical Society of Japan   52 ( 1 )   492 - 492   1997.3

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  • Heat Capacities of UPt_3 under High Pressures and Magnetic Fields II

    Koda A., Kobayashi T.C., Amaya K., Kimura N., Onuki Y.

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting   1996 ( 3 )   51 - 51   1996.9

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Research Projects

  • Materials development of ionic conductors based on local Ion dynamics

    Grant number:24H00042  2024.4 - 2029.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (S)

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    Grant amount:\208260000 ( Direct Cost: \160200000 、 Indirect Cost:\48060000 )

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  • Non-equilibrium Physics Probed by Muon

    Grant number:23K28353  2023.4 - 2027.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Grant amount:\18330000 ( Direct Cost: \14100000 、 Indirect Cost:\4230000 )

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  • 複合極限条件下のミュオンスピン回転・共鳴法による水素化物超伝導の水素の挙動解明

    Grant number:22H00110  2022.4 - 2026.3

    日本学術振興会  科学研究費助成事業  基盤研究(A)

    幸田 章宏, 下村 浩一郎, 三原 基嗣, 清水 克哉, 有田 亮太郎, 髭本 亘

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    Grant amount:\43160000 ( Direct Cost: \33200000 、 Indirect Cost:\9960000 )

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  • Neutron detection efficiency improved by employing dual current-biased kinetic inductance detectors

    Grant number:16H02450  2016.4 - 2021.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    Ishida Takekazu

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    Grant amount:\44070000 ( Direct Cost: \33900000 、 Indirect Cost:\10170000 )

    Neutron detector CB-KID with a delay-line technique is based on the principle of capturing neutrons by measuring a pair of electromagnetic-wave signals generated by the charged particles emitted from the nuclear reaction of neutrons with boron-10. This causes the superconducting Cooper-pair breaking in the superconducting wire and a sudden change in the kinetic inductance. The four-terminal neutron imaging method was completed in this project. With this detector, the Gd spokes in Siemens star was identified down to 7μm. In addition, YbSn3 single-crystal mosaic structure was imaged from Bragg dip analysis of the YbSn3 single crystals. In addition, the Bragg edge analysis of the Fe sample was successfully performed even with a restricted area of 3.1μm x 2.3μm with CB-KID. A specially-designed cryostat was completed to identify a Gd spoke width down to 14μm located at room temperature. This significantly enhanced the practicality of the CB-KID imaging for various interesting systems.

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  • Ion diffusion in solids clarified with quantum beams and application to electrochemical devices

    Grant number:26286084  2014.4 - 2018.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Sugiyama Jun, NOZAKI Hiroshi, HARADA Masashi, UMEGAKI Izumi, SATO Taku

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    Grant amount:\16250000 ( Direct Cost: \12500000 、 Indirect Cost:\3750000 )

    Ion diffusion is solids is a basic principle behind an operation of batteries. However, it is extremely difficult to determine a reliable diffusion coefficient of Li and Na ions in electrode materials, particularly for cathode materials due to the presence of paramagnetic moments. We have therefore attempted to measure a diffusion coefficient in such materials with a muon spin rotation and relaxation (muSR) technique, because muSR can detect a slight deviation of internal magnetic fields in solids caused by Li (Na) diffusion. As a result, we have successfully obtained diffusion coefficients of Li and Na ions in electrode and electrolyte materials using powder, electrode sheet, and film samples.

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  • Heterogeneous electron correlation in the surface-bulk boundary and across thin layered structures

    Grant number:23108004  2011.4 - 2016.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    Kadono Ryosuke, NISHIDA Nobuhiko, HASHIZUME Tomihiro, KOIKE Yoji, INOUE Katsuya, KOJIMA Kenji, KODA Akihiro, ADACHI Tadashi, NAGAOSA Naoto, NAITO Michio, AKIMITSU Jun, FUJIMORI Atsushi, HIRATA Kazuto, TAKEYA Hiroyuki, OKUMA Satoshi, IZAWA Koichi, KANEKO Shin-ichi, MIBU Ko, KISHINE Junichiro, YAMAMOTO Hideki

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    Grant amount:\205660000 ( Direct Cost: \158200000 、 Indirect Cost:\47460000 )

    While surfaces serves as windows through which materials properties are studied, they exhibit properties often distinct from those as bulk. This points to the possibility that information connecting surface and bulk would help establishing a new science for understanding the state of matter. The ultra slow muon microscope was expected to be the first means to be available for such purpose, and research was planned to study the surface-bulk boundary regions of transition metal oxides and related compounds to seek for relevant information including hints for unprecedented phenomena (heterogeneous electronic correlation). The researches led to the revelation of interesting properties for these compounds in a series of preliminary studies that will be further investigated using the ultra slow muon.

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  • Metal-insulator transition of liquid metals near the critical point studied by muSR technique

    Grant number:22604011  2010 - 2014

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    KODA Akihiro, TAKESHITA Nao

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\4810000 ( Direct Cost: \3700000 、 Indirect Cost:\1110000 )

    It is proposed to investigate the metal-insulator transition of liquid metals near the critical point by using muon spin relaxation (muSR) technique. In order to achieve this, we have started to establish experimental techniques at high-pressures and high-temperatures. It turned out that high intensity current to raise the sample temperature by Joule heating induces magnetic field, which is not negligible for the muSR experiment. Further consideration to improve the problem was suspended due to several troubles happened at J-PARC in recent years. On the other hand, it was found that an anvil material AN1800 is suitable for the high-pressure cell employed in muSR experiments.
    In summary, the planned experiment have not been perfomed yet, because of undesirable events mentioned above.

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  • Studies on the development of a curved superconducting solenoid magnet for the very intense ultra slow muon beam with high luminosity

    Grant number:19206014  2007 - 2009

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    MIYAKE Yasuhiro, SHIMOMURA Koichiro, IKEDO Yutaka, NISHIYAMA Kusuo, STRASSER Patrick, KAWAMURA Naritoshi, OGITSU Tooru, KODA Akihiro, MAKIMURA Shunsuke, FUJIMORI Hiroshi, YAMAMOTO Akira, NAGAMINE Kanetada

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    Grant amount:\48100000 ( Direct Cost: \37000000 、 Indirect Cost:\11100000 )

    We are designing one super omega muon channel with a large acceptance of 400mSr for the study of thin film magnetism or negative muon physics in the MLF experimental hall No.~2. In the case of the super omega beam channel, we are going to install a large acceptance solenoid made of mineral insulation cables (MIC) and a superconducting curved transport solenoid. We can collect either surface or cloud muons with a large acceptance of 400mSr. Finally, we are expecting 4 $\times$ $10^{8}$ surface $\mu^{+}$/s and $10^{7}$ cloud $\mu^{-}$/s in the MLF experimental hall No.~2. Although many of these studies can be performed using either surface or decay muons, at the super omega channel we are aiming to create a new type of muon source : an intense ultra-slow muon source. Slow muons are generated through resonant ionization of muonium (Mu). Mu is formed by stopping an intense surface muon beam on the rear surface of a hot W foil. At the RIKEN/RAL muon facility, 20 slow $\mu^{+}$/s are obtained out of 1.2 $\times$ $10^{6}$ surface muons/s \cite{Pavel2008}. Taking into account the repetition rate of the pulsed laser system and the proton beam, as well as the surface muon ratio between RIKEN-RAL and J-PARC MUSE, we can expect 1.3 $\times$ $10^{4}$ slow $\mu^{+}$/s without any additional laser development. A rate of 1.3 $\times$ $10^{6}$ slow $\mu^{+}$/s can be achieved with additional laser development, such as the tripling of 366nm photons with pico second pulse width to match the Doppler broadening of the Mu at 2000K. By obtaining the budget of Kakenhi(Grants-in-Aid for scientific research) (A), we have completed a design for the curved superconducting magnet, which enables us to generate an very intense ultra slow muons.

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  • Relationship between unconventional superconducting phase and magnetic phase in strongly correlated electron compounds

    Grant number:18340102  2006 - 2007

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    ISHIDA Kenji, SAKURAI Hiroya, FUJITA Masaki, KODA Akihiro, IKEDA Hiroaki

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    Grant amount:\16720000 ( Direct Cost: \15400000 、 Indirect Cost:\1320000 )

    During this research project, we have performed NMR and nuclear quadrupole resonance (NQR) on various strongly correlated electron compounds in order to investigate superconducting properties and spin dynamics in the normal state. Especially, bilayered hydrate (BLH) cobaltate superconductors (Na_x(H_3O)_zCoO_<2-y>H_2O) and cuprate superconductors (La_<2-x>Sr_xCuO_4) are intensively studied.
    1) Co NMR/NQR Studies on Na_x(H_3O)_zCoO_<2y>H_2O
    We found a weak magnetism in a nonsuperconducting BLH cobaltate sample with Co-NQR measurements. This sample shows the divergence of 1/T_1 T at T_M〜5.5 K, below which the Co-NQR spectrum is broadened due to the appearance of the internal field at the Co site. We also found that the NQR frequency v_〓 correlates with magnetic fluctuations just above T_c from measurements of NQR spectra and 1/TlT in more than 10 BLH samples with various T_c and T_M. Phase diagram of BLH cobaltate superconductors was developed by plotting T_c and T_M against v_〓. It was shown that superconductivity with the highest T_c is observed in the vicinity of a magnetic phase, suggesting that magnetic fluctuations play an important role in the occurrence of unconventional superconductivity.
    2) Static magnetism and superconductivity in La_<2-x>,Sr_xCuO_4
    Relationship between magnetism and superconductivity was investigated with transverse-field (TF) μSR in La_<1.93>Sr_<0.07>CuO_4 (T_c〜17 K), which is close to the border of two phases. We found the occurrence of the static magnetism at T_g〜4K far below T_c. The magnetic volume fraction was estimated to be more than 90 %. We conclude that the static magnetism with staggered correlation coexists with superconductivity.

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  • ミューエスアール法による強相関電子系の研究

    Grant number:02J04285  2002 - 2004

    日本学術振興会  科学研究費助成事業  特別研究員奨励費

    幸田 章宏

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    Grant amount:\3900000 ( Direct Cost: \3900000 )

    1.パイロクロア格子を有する酸化物超伝導体RbOs_2O_6およびCsOs_2O_6の強い横磁場下でのμSR測定をカナダTRIUMF研究所(以下、TRIUMF)でおこなった。それぞれの超伝導体において、磁束格子状態の形成にともなうミュオンスピン緩和率の増大を確認した。また異方的超伝導状態の可能性を検証するために磁場進入長の磁場依存性の測定をおこなった。RbOs_2O_6においては磁場によって磁場進入長が増大する様子が観測され、準粒子励起の増大を示唆する結果が得られた。しかしながら測定温度が約0,5T_cと比較的高温であったため、熱による準粒子励起の可能性も排除しきれず、超伝導秩序変数の異方性についてはさらに低温における検証が必要である。一方、CsOs_2O_6においては他のKOs_2O_6,RbOs_2O_6と比較して超伝導状態でのミュオンスピン緩和率が小さく、また磁場印加にともなって、この緩和率の値はさらに急激に小さくなっていくことが明らかとなった。解析によって、この急激な変化は上部臨界磁場が従来報告されている値よりもかなり小さいと仮定すれば、磁場に依存しない磁場侵入長として解釈できることが示された。つまりCsOs_2O_6は異方性の非常に小さな従来型の超伝導である可能性が考えられる。この点についてμSR測定自体により上部臨界磁場を決めることが重要であると考え、今後も引き続いて測定をおこなう。
    2.昨年度実験をおこなったスピネル酸化物超伝導体LiTi_2O_4の、今回はさらに過剰Liドープ試料について強い横磁場下でのμSR測定をTRIUMFでおこなった。Li_<1.1>Ti_<1.9>O_4の試料ではLiを過剰ドープしない試料と同様な超伝導転移にともなうミュオンスピン緩和率の増大を観測した。しかしLi_<1.2>Ti_<1.8>O_4およびLi_<1.3>Ti_<1.7>O_4の試料ではバルクな超伝導転移を示唆する緩和率の変化は観測されず、従来のマクロ測定の報告内容を支持する結果であった。ただし超伝導が観測されない試料では低温になるにつれ徐々に緩和率が上昇して恥く傾向が観測されており、これは磁気モーメントの臨界緩和に関連した現象と考えられる。この系の超伝導と磁性との関連を明らかにする上で重要な新たな発見であると考えている。
    3.重い電子的な特異な基底状態を持つスピネル酸化物LiV_2O_4について、最近、単結晶の合成に物性研グループが成功し、その単結晶を用いたμSR測定をおこなった。我々が従来、多結晶試料の測定において指摘してきた相分離状態が単結晶試料でも観測され、試料の質の不均一さによるものではなく、相分離状態がこの系の本質的な現象であることが示された。

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