Magnetoelectric coupling and its impact on the multicaloric effect

Kentaro Ino, Keisuke Matsuura, Tetsuya Nomoto, Takashi Kurumaji, Yoshinori Tokura, Fumitaka Kagawa

Physical Review B   2025年7月

Unveiling an in-plane Hall effect in rutile RuO2 films

Meng Wang, Jianbing Zhang, Di Tian, Pu Yu, Fumitaka Kagawa

Communications Physics   2025年1月

Low-temperature hysteresis broadening emerging from domain-wall creep dynamics in a two-phase competing system

Keisuke Matsuura, Yo Nishizawa, Yuto Kinoshita, Takashi Kurumaji, Atsushi Miyake, Hiroshi Oike, Masashi Tokunaga, Yoshinori Tokura, Fumitaka Kagawa

Communications Materials   2023年9月

Transport signatures of magnetic texture evolution in a microfabricated thin plate of antiskyrmion-hosting (Fe,Ni,Pd)3P

Daisuke Nakamura, Kosuke Karube, Keisuke Matsuura, Fumitaka Kagawa, Xiuzhen Yu, Yoshinori Tokura, Yasujiro Taguchi

Physical Review B   2023年9月

Unveiling the anisotropic fractal magnetic domain structure in bulk crystals of antiskyrmion host (Fe,Ni,Pd)3P by small-angle neutron scattering

Kosuke Karube, Victor Ukleev, Fumitaka Kagawa, Yoshinori Tokura, Yasujiro Taguchi, Jonathan S. White

Journal of Applied Crystallography   2022年12月

Nonthermal current-induced transition from skyrmion lattice to nontopological magnetic phase in spatially confined MnSi

Takuro Sato, Wataru Koshibae, Akiko Kikkawa, Yasujiro Taguchi, Naoto Nagaosa, Yoshinori Tokura, Fumitaka Kagawa

Physical Review B   2022年10月

Magnetic field control of insulator-metal crossover in cobaltite films via thermally activated percolation

Meng Wang, Keisuke Matsuura, Masao Nakamura, Masahiro Sawada, Masashi Kawasaki, Fumitaka Kagawa

Physical Review B   2022年10月

Real-Space Observation of Emergent Complexity of Phase Evolution in Micrometer-Sized IrTe2 Crystals

H. Oike, K. Takeda, M. Kamitani, Y. Tokura, F. Kagawa

Physical Review Letters   2021年9月

Real-space observations of 60-nm skyrmion dynamics in an insulating magnet under low heat flow

Xiuzhen Yu, Fumitaka Kagawa, Shinichiro Seki, Masashi Kubota, Jan Masell, Fehmi S. Yasin, Kiyomi Nakajima, Masao Nakamura, Masashi Kawasaki, Naoto Nagaosa, Yoshinori Tokura

Nature Communications   2021年8月

Room-temperature antiskyrmions and sawtooth surface textures in a non-centrosymmetric magnet with S4 symmetry

Kosuke Karube, Licong Peng, Jan Masell, Xiuzhen Yu, Fumitaka Kagawa, Yoshinori Tokura, Yasujiro Taguchi

Nature Materials   2021年3月

Real-space observations of 60-nm skyrmion dynamics in an insulating magnet under low heat flow

Xiuzhen Yu, Fumitaka Kagawa, Shinichiro Seki, Masashi Kubota, Jan Masell, Fehmi Yasin, Kiyomi Nakajima, Masao Nakamura, Masashi Kawasaki, Naoto Nagaosa, Yoshinori Tokura

2021年2月

Emergent electromagnetic induction in a helical-spin magnet

Tomoyuki Yokouchi, Fumitaka Kagawa, Max Hirschberger, Yoshichika Otani, Naoto Nagaosa, Yoshinori Tokura

Nature   586 ( 7828 )   232 - 236   2020年10月

Propagation dynamics of spin excitations along skyrmion strings

S. Seki, M. Garst, J. Waizner, R. Takagi, N. D. Khanh, Y. Okamura, K. Kondou, F. Kagawa, Y. Otani, Y. Tokura

Nature Communications   2020年1月

Kinetic approach to superconductivity hidden behind a competing order

Hiroshi Oike, Manabu Kamitani, Yoshinori Tokura, Fumitaka Kagawa

Science Advances   4 ( 10 )   2018年10月

Aggregation and collapse dynamics of skyrmions in a non-equilibrium state

Xiuzhen Yu, Daisuke Morikawa, Tomoyuki Yokouchi, Kiyou Shibata, Naoya Kanazawa, Fumitaka Kagawa, Taka-hisa Arima, Yoshinori Tokura

Nature Physics   14 ( 8 )   832 - 836   2018年8月

Current-induced dynamics of skyrmion strings

Tomoyuki Yokouchi, Shintaro Hoshino, Naoya Kanazawa, Akiko Kikkawa, Daisuke Morikawa, Kiyou Shibata, Taka-hisa Arima, Yasujiro Taguchi, Fumitaka Kagawa, Naoto Nagaosa, Yoshinori Tokura

Science Advances   4 ( 8 )   2018年8月

Quantized chiral edge conduction on domain walls of a magnetic topological insulator

K. Yasuda, M. Mogi, R. Yoshimi, A. Tsukazaki, K. S. Takahashi, M. Kawasaki, F. Kagawa, Y. Tokura

Science   358 ( 6368 )   1311 - 1314   2017年12月

Current-induced viscoelastic topological unwinding of metastable skyrmion strings

Fumitaka Kagawa, Hiroshi Oike, Wataru Koshibae, Akiko Kikkawa, Yoshihiro Okamura, Yasujiro Taguchi, Naoto Nagaosa, Yoshinori Tokura

Nature Communications   2017年11月

Electrical magnetochiral effect induced by chiral spin fluctuations

T. Yokouchi, N. Kanazawa, A. Kikkawa, D. Morikawa, K. Shibata, T. Arima, Y. Taguchi, F. Kagawa, Y. Tokura

Nature Communications   2017年10月

Shift current photovoltaic effect in a ferroelectric charge-transfer complex

M. Nakamura, S. Horiuchi, F. Kagawa, N. Ogawa, T. Kurumaji, Y. Tokura, M. Kawasaki

Nature Communications   2017年8月

Skyrmion lattice structural transition in MnSi

Taro Nakajima, Hiroshi Oike, Akiko Kikkawa, Elliot P. Gilbert, Norman Booth, Kazuhisa Kakurai, Yasujiro Taguchi, Yoshinori Tokura, Fumitaka Kagawa, Taka-hisa Arima

Science Advances   3 ( 6 )   2017年6月

Quenching of Charge and Spin Degrees of Freedom in Condensed Matter

Kagawa, Fumitaka, Oike, Hiroshi

Advanced Materials   29 ( 25 )   2017年

Directional electric-field induced transformation from skyrmion lattice to distinct helices in multiferroic Cu2OSeO3

Okamura, Y., Yamasaki, Y., Morikawa, D., Honda, T., Ukleev, V., Nakao, H., Murakami, Y., Shibata, K., Kagawa, F., Seki, S., Arima, T., Tokura, Y.

Physical Review B   95 ( 18 )   2017年

Current-Induced Nucleation and Annihilation of Magnetic Skyrmions at Room Temperature in a Chiral Magnet

Yu, Xiuzhen, Morikawa, Daisuke, Tokunaga, Yusuke, Kubota, Masashi, Kurumaji, Takashi, Oike, Hiroshi, Nakamura, Masao, Kagawa, Fumitaka, Taguchi, Yasujiro, Arima, Taka-hisa, Kawasaki, Masashi, Tokura, Yoshinori

Advanced Materials   29 ( 21 )   2017年

Quantum Phenomena Emerging Near a Ferroelectric Critical Point in a Donor-Acceptor Organic Charge-Transfer Complex

Kagawa, Fumitaka, Horiuchi, Sachio, Tokura, Yoshinori

Crystals   7 ( 4 )   2017年

Robust metastable skyrmions and their triangular–square lattice structural transition in a high-temperature chiral magnet

K. Karube, J. S. White, N. Reynolds, J. L. Gavilano, H. Oike, A. Kikkawa, F. Kagawa, Y. Tokunaga, H. M. Rønnow, Y. Tokura, Y. Taguchi

Nature Materials   15 ( 12 )   1237 - 1242   2016年12月

Transition to and from the skyrmion lattice phase by electric fields in a magnetoelectric compound

Y. Okamura, F. Kagawa, S. Seki, Y. Tokura

Nature Communications   2016年9月

Interface-driven topological Hall effect in SrRuO 3 -SrIrO 3 bilayer

Jobu Matsuno, Naoki Ogawa, Kenji Yasuda, Fumitaka Kagawa, Wataru Koshibae, Naoto Nagaosa, Yoshinori Tokura, Masashi Kawasaki

Science Advances   2 ( 7 )   2016年7月

Critical phenomena of emergent magnetic monopoles in a chiral magnet

N. Kanazawa, Y. Nii, X. -X. Zhang, A. S. Mishchenko, G. De Filippis, F. Kagawa, Y. Iwasa, N. Nagaosa, Y. Tokura

Nature Communications   2016年5月

Athermal domain-wall creep near a ferroelectric quantum critical point

Fumitaka Kagawa, Nao Minami, Sachio Horiuchi, Yoshinori Tokura

Nature Communications   2016年2月

Interplay between topological and thermodynamic stability in a metastable magnetic skyrmion lattice

Hiroshi Oike, Akiko Kikkawa, Naoya Kanazawa, Yasujiro Taguchi, Masashi Kawasaki, Yoshinori Tokura, Fumitaka Kagawa

Nature Physics   12 ( 1 )   62 - 66   2016年1月

Transport signatures of Fermi surface topology change in BiTeI

Ye, Linda, Checkelsky, Joseph G., Kagawa, Fumitaka, Tokura, Yoshinori

Physical Review B   91 ( 20 )   2015年

Few-Volt Operation of Printed Organic Ferroelectric Capacitor

Noda, Yuki, Yamada, Toshikazu, Kobayashi, Kensuke, Kumai, Reiji, Horiuchi, Sachio, Kagawa, Fumitaka, Hasegawa, Tatsuo

Advanced Materials   27 ( 41 )   2015年

Discretized topological Hall effect emerging from skyrmions in constricted geometry

Kanazawa, N., Kubota, M., Tsukazaki, A., Kozuka, Y., Takahashi, K. S., Kawasaki, M., Ichikawa, M., Kagawa, F., Tokura, Y.

Physical Review B   91 ( 4 )   2015年

Microwave Magnetochiral Dichroism in the Chiral-Lattice Magnet Cu2OSeO3

Okamura, Y., Kagawa, F., Seki, S., Kubota, M., Kawasaki, M., Tokura, Y.

Physical Review Letters   114 ( 19 )   2015年

Formation of In-plane Skyrmions in Epitaxial MnSi Thin Films as Revealed by Planar Hall Effect

Yokouchi, Tomoyuki, Kanazawa, Naoya, Tsukazaki, Atsushi, Kozuka, Yusuke, Kikkawa, Akiko, Taguchi, Yasujiro, Kawasaki, Masashi, Ichikawa, Masakazu, Kagawa, Fumitaka, Tokura, Yoshinori

Journal of the Physical Society of Japan   84 ( 10 )   2015年

Quantum ferroelectricity in charge-transfer complex crystals

Horiuchi, Sachio, Kobayashi, Kensuke, Kumai, Reiji, Minami, Nao, Kagawa, Fumitaka, Tokura, Yoshinori

Nature Communications   6   2015年

Phase-change memory function of correlated electrons in organic conductors

Oike, H., Kagawa, F., Ogawa, N., Ueda, A., Mori, H., Kawasaki, M., Tokura, Y.

Physical Review B   91 ( 4 )   2015年

Correlated Proton Transfer and Ferroelectricity along Alternating Zwitterionic and Nonzwitterionic Anthranilic Acid Molecules

Horiuchi, Sachio, Noda, Yuki, Hasegawa, Tatsuo, Kagawa, Fumitaka, Ishibashi, Shoji

Chemistry of Materials   27 ( 18 )   2015年

Polarization Switching Ability Dependent on Multidomain Topology in a Uniaxial Organic Ferroelectric

Kagawa, Fumitaka, Horiuchi, Sachio, Minami, Nao, Ishibashi, Shoji a, Kobayashi, Kensuke, Kumai, Reiji, Murakami, Youichi, Tokura, Yoshinori

Nano Letters   14 ( 1 )   2014年

Structure-Property Relationship of Supramolecular Ferroelectric [H-66dmbp][Hca] Accompanied by High Polarization, Competing Structural Phases, and Polymorphs

Kobayashi, Kensuke, Horiuchi, Sachio, Ishibashi, Shoji, Kagawa, Fumitaka, Murakami, Youichi, Kumai, Reiji

Chemistry-a European Journal   20 ( 52 )   2014年

Stability of two-dimensional skyrmions in thin films of Mn1-xFexSi investigated by the topological Hall effect

Yokouchi, T., Kanazawa, N., Tsukazaki, A., Kozuka, Y., Kawasaki, M., Ichikawa, M., Kagawa, F., Tokura, Y.

Physical Review B   89 ( 6 )   2014年

Systematic Variations in the Charge-Glass-Forming Ability of Geometrically Frustrated theta-(BEDT-TTF)(2)X Organic Conductors

Sato, Takuro, Kagawa, Fumitaka, Kobayashi, Kensuke, Ueda, Akira, Mori, Hatsumi, Miyagawa, Kazuya, Kanoda, Kazushi, Kumai, Reiji, Murakami, Youichi, Tokura, Yoshinori

Journal of the Physical Society of Japan   83 ( 8 )   2014年

Comment on "Robust Formation of Skyrmions and Topological Hall Effect Anomaly in Epitaxial Thin Films of MnSi" Reply

Li, Yufan, Kanazawa, N., Yu, X. Z., Kagawa, F., Tokura, Y.

Physical Review Letters   112 ( 5 )   2014年

Emergence of nonequilibrium charge dynamics in a charge-cluster glass

Sato, T., Kagawa, F., Kobayashi, K., Miyagawa, K., Kanoda, K., Kumai, R., Murakami, Y., Tokura, Y.

Physical Review B   89 ( 12 )   2014年

Electric double layer transistors with ferroelectric BaTiO3 channels

Ito, M., Matsubara, Y., Kozuka, Y., Takahashi, K. S., Kagawa, F., Ye, J. T., Iwasa, Y., Ueno, K., Tokura, Y., Kawasaki, M.

Applied Physics Letters   104 ( 22 )   2014年

Microwave magnetoelectric effect via skyrmion resonance modes in a helimagnetic multiferroic

Okamura, Y., Kagawa, F., Mochizuki, M., Kubota, M., Seki, S., Ishiwata, S., Kawasaki, M., Onose, Y., Tokura, Y.

Nature Communications   4   2013年

Charge-cluster glass in an organic conductor

Kagawa, F., Sato, T., Miyagawa, K., Kanoda, K., Tokura, Y., Kobayashi, K., Kumai, R., Murakami, Y.

Nature Physics   9 ( 7 )   2013年

Robust Formation of Skyrmions and Topological Hall Effect Anomaly in Epitaxial Thin Films of MnSi

Li, Yufan, Kanazawa, N., Yu, X. Z., Tsukazaki, A., Kawasaki, M., Ichikawa, M., Jin, X. F., Kagawa, F., Tokura, Y.

Physical Review Letters   110 ( 11 )   2013年

Miniature Hall sensor integrated on a magnetic thin film for detecting domain wall motion

Kubota, M., Tokunaga, Y., Kanazawa, N., Kagawa, F., Tokura, Y., Kawasaki, M.

Journal of Applied Physics   114 ( 5 )   2013年

Systematic control of stress-induced anisotropy in pseudomorphic iron garnet thin films

Kubota, M., Shibuya, K., Tokunaga, Y., Kagawa, F., Tsukazaki, A., Tokura, Y., Kawasaki, M.

Journal of Magnetism and Magnetic Materials   339   2013年

Stress-Induced Perpendicular Magnetization in Epitaxial Iron Garnet Thin Films

Kubota, Masashi, Tsukazaki, Atsushi, Kagawa, Fumitaka, Shibuyay, Keisuke, Tokunaga, Yusuke, Kawasaki, Masashi, Tokura, Yoshinori

Applied Physics Express   5 ( 10 )   2012年

Above-room-temperature ferroelectricity and antiferroelectricity in benzimidazoles

Horiuchi, Sachio, Kagawa, Fumitaka, Hatahara, Kensuke, Kobayashi, Kensuke, Kumai, Reiji, Murakami, Youichi, Tokura, Yoshinori

Nature Communications   3   2012年

Dynamics of multiple phases in a colossal-magnetoresistive manganite as revealed by dielectric spectroscopy

Sheng, Zhigao, Nakamura, Masao, Kagawa, Fumitaka, Kawasaki, Masashi, Tokura, Yoshinori

Nature Communications   3   2012年

Domain-wall dynamics coupled to proton motion in a hydrogen-bonded organic ferroelectric

Kagawa, Fumitaka, Hatahara, Kensuke, Horiuchi, Sachio, Tokura, Yoshinori

Physical Review B   85 ( 22 )   2012年

Emergent phenomena in perovskite-type manganites

Taguchi, Y., Sakai, H., Okuyama, D., Ishiwata, S., Fujioka, J., Fukuda, T., Hashizume, D., Kagawa, F., Takahashi, Y., Shimano, R., Tokunaga, Y., Kaneko, Y., Nakao, A., Nakao, H., Murakami, Y., Sugimoto, K., Takata, M., Yamauchi, K., Picozzi, S., Baron, A. Q. R., Arima, T., Tokura, Y.

Physica B-Condensed Matter   407 ( 11 )   2012年

Electronic Ferroelectricity in a Molecular Crystal with Large Polarization Directing Antiparallel to Ionic Displacement

Kobayashi, Kensuke, Horiuchi, Sachio, Kumai, Reiji, Kagawa, Fumitaka, Murakami, Youichi, Tokura, Yoshinori

Physical Review Letters   108 ( 23 )   2012年

Displacement-Type Ferroelectricity with Off-Center Magnetic Ions in Perovskite Sr1-xBaxMnO3

Sakai, H., Fujioka, J., Fukuda, T., Okuyama, D., Hashizume, D., Kagawa, F., Nakao, H., Murakami, Y., Arima, T., Baron, A. Q. R., Taguchi, Y., Tokura, Y.

Physical Review Letters   107 ( 13 )   2011年

Relaxation dynamics of multiferroic domain walls in DyMnO3 with cycloidal spin order

Kagawa, F., Onose, Y., Kaneko, Y., Tokura, Y.

Physical Review B   83 ( 5 )   2011年

Ferroelectricity in a one-dimensional organic quantum magnet

Kagawa, Fumitaka, Horiuchi, Sachio, Tokunaga, Masashi, Fujioka, Jun, Tokura, Yoshinori

Nature Physics   6 ( 3 )   2010年

Electric-Field Control of Solitons in a Ferroelectric Organic Charge-Transfer Salt

Kagawa, F., Horiuchi, S., Matsui, H., Kumai, R., Onose, Y., Hasegawa, T., Tokura, Y.

Physical Review Letters   104 ( 22 )   2010年

Dynamical Disorder of pi-Molecular Structures Induced by Proton Dynamics in an Organic Ferroelectric Compound

Fujioka, J., Horiuchi, S., Kagawa, F., Tokura, Y.

Physical Review Letters   102 ( 19 )   2009年

Magnetic Mott criticality in a kappa-type organic salt probed by NMR

Kagawa, Fumitaka, Miyagawa, Kazuya, Kanoda, Kazushi

Nature Physics   5 ( 12 )   2009年

Dynamics of Multiferroic Domain Wall in Spin-Cycloidal Ferroelectric DyMnO3

Kagawa, F., Mochizuki, M., Onose, Y., Murakawa, H., Kaneko, Y., Furukawa, N., Tokura, Y.

Physical Review Letters   102 ( 5 )   2009年

Rotation of an Electric Polarization Vector by Rotating Magnetic Field in Cycloidal Magnet Eu(0.55)Y(0.45)MnO(3)

Murakawa, H., Onose, Y., Kagawa, F., Ishiwata, S., Kaneko, Y., Tokura, Y.

Physical Review Letters   101 ( 19 )   2008年

Field-induced staggered magnetic moment in the quasi-two-dimensional organic Mott insulator kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Cl

Kagawa, F., Kurosaki, Y., Miyagawa, K., Kanoda, K.

Physical Review B   78 ( 18 )   2008年

Unconventional critical behaviour in a quasi-two-dimensional organic conductor

Kagawa, F., Miyagawa, K., Kanoda, K.

Nature   436 ( 7050 )   2005年

Mott transition in the quasi-two-dimensional kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Cl; Transport criticality and field-induced transition

Kagawa, F., Itou, T., Miyagawa, K., Kanoda, K.

Synthetic Metals   152 ( 1-3 )   2005年

Transport criticality of the first-order Mott transition in the quasi-two-dimensional organic conductor kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Cl

Kagawa, F., Itou, T., Miyagawa, K., Kanoda, K.

Physical Review B   69 ( 6 )   2004年

Nonthermal decomposition of C-60 polymers induced by tunneling electron injection

Nakamura, Y., Kagawa, F., Kasai, K., Mera, Y., Maeda, K.

Applied Physics Letters   85 ( 22 )   2004年

Magnetic-field-induced Mott transition in a quasi-two-dimensional organic conductor

Kagawa, F., Itou, T., Miyagawa, K., Kanoda, K.

Physical Review Letters   93 ( 12 )   2004年

Cluster reactions in C-60 films induced by electron injection from a scanning tunneling microscope tip

Nakamura, Y., Kagawa, F., Kasai, K., Mera, Y., Maeda, K.

Surface Science   528 ( 1-3 )   2003年

分子性物質の可制御性を用いた領域横断型研究と境界領域の物性開拓

研究課題/領域番号：25220709  2013年5月 - 2018年3月

日本学術振興会  科学研究費助成事業  基盤研究(S)

鹿野田 一司, 賀川 史敬, 伊藤 哲明, 宮川 和也

磁性強誘電体デバイスの高速動作に向けた磁気誘電ドメイン壁動力学の解明

研究課題/領域番号：24684020  2012年4月 - 2014年3月

日本学術振興会  科学研究費助成事業  若手研究(A)

賀川 史敬

バンド幅制御型モット転移の2次元臨界性

研究課題/領域番号：05J11071  2005年 - 2006年

日本学術振興会  科学研究費助成事業  特別研究員奨励費

賀川 史敬