Ultrafast anisotropic polarization dynamics of electronic ferroelectric LuFe2O4

H. Yu, Y. Fukada, G. Nishida, K. Takubo, T. Ishikawa, S. Koshihara, N. Ikeda, Y. Okimoto

Physical Review Materials   2024.6

Frustrated competitive forces in the Et2Me2Sb[Pd(dmit)2]2 molecular conductor

Laurent Guérin, Elzbieta Trzop, Tadahiko Ishikawa, Shinya Koshihara, Takashi Yamamoto, Bertrand Toudic, Reizo Kato

Physical Review B   2023.10

Appearance of a Photoinduced Hidden State in the Electron Donor–Acceptor Type Metal–Organic Framework (NPr₄)₂[Fe₂(Cl₂An)₃] Reviewed

Samiran Banu, Mone Kato, Kou Takubo, Yoichi Okimoto, Shinya Koshihara, Kaoru Iwano, Wataru Kosaka, Hitoshi Miyasaka, Tadahiko Ishikawa

Advanced Optical Materials   2023.9

Nonlinear Optical Properties in an Epitaxial YbFe2O4 Film Probed by Second Harmonic and Terahertz Generation Reviewed International journal

Hongwu Yu, Yoichi Okimoto, Atsuya Morita, Shuhei Shimanuki, Kou Takubo, Tadahiko Ishikawa, Shin-ya Koshihara, Ryusei Minakami, Hirotake Itoh, Shinichiro Iwai, Naoshi Ikeda, Takumi Sakagami, Mayu Nozaki, Tatsuo Fujii

Materials   16 ( 5 )   1989 - (1-11)   2023.2

Orbital Degree of Freedom in Conducting Platinum–Dithiolene Complex Salts

Takashi Yamamoto, Daiki Hiraga, Ikumi Arashi, Koh Takasugi, Toshio Naito, Tadahiko Ishikawa, Yoichi Okimoto, Shin-ya Koshihara, Mitsushiro Nomura, Reizo Kato

Journal of the Physical Society of Japan   92 ( 2 )   2023.2

Ultrafast variation of the polarized state in proton-π electron coupled ferroelectric cocrystal Phz-H2ca Reviewed

Akihiro Sugisawa, Tsugumi Umanodan, Hongwu Yu, Tadahiko Ishikawa, Shin-ya Koshihara, Sachio Horiuchi, Yoichi Okimoto

Materials Advances   2023

Ultrafast opto-protonics in a hydrogen-bonded π-molecular ferroelectric crystal Reviewed

Yoichi Okimoto, Peiyu Xia, Jiro Itatani, Haruka Matsushima, Tadahiko Ishikawa, Shin-ya Koshihara, Sachio Horiuchi

APL Materials   2022.9

Generation of sub-100 fs electron pulses for time-resolved electron diffraction using a direct synchronization method Reviewed

Kou Takubo, Samiran Banu, Sichen Jin, Misaki Kaneko, Wataru Yajima, Makoto Kuwahara, Yasuhiko Hayashi, Tadahiko Ishikawa, Yoichi Okimoto, Masaki Hada, Shinya Koshihara

Review of Scientific Instruments   93 ( 5 )   053005 - 053005   2022.5

Picosecond dynamics in layered cobalt perovskites studied by time-resolved Raman spectroscopy Reviewed

Ryo Fukaya, Nao Yamaya, Tadahiko Ishikawa, Shin-ya Koshihara, Yoichi Okimoto, Ken Onda, Akira Isayama, Takao Sasagawa, Kazumasa Horigane

Comptes Rendus. Physique   22 ( S2 )   95 - 102   2021.12

Challenges for developing photo-induced phase transition (PIPT) systems: From classical (incoherent) to quantum (coherent) control of PIPT dynamics Reviewed

Shinya Koshihara, Tadahiko Ishikawa, Yoichi Okimoto, Ken Onda, Ryo Fukaya, Masaki Hada, Yasuhiko Hayashi, Sumio Ishihara, Tadeusz Luty

Physics Reports   2021.10

Photoinduced oxygen transport in cobalt double-perovskite crystal EuBaCo2O5.39 Reviewed

Masaki Hada, Satoshi Ohmura, Tadahiko Ishikawa, Masaki Saigo, Naoya Keio, Wataru Yajima, Tatsuya Suzuki, Daisuke Urushihara, Kou Takubo, Yusuke Masaki, Makoto Kuwahara, Kenji Tsuruta, Yasuhiko Hayashi, Jiro Matsuo, Takayoshi Yokoya, Ken Onda, Fuyuki Shimojo, Muneaki Hase, Sumio Ishihara, Toru Asaka, Nobuyuki Abe, Taka-hisa Arima, Shin-ya Koshihara, Yoichi Okimoto

Applied Materials Today   24   101167 - 101167   2021.9

Photoexcited State and Ultrafast Dynamics in Spin-Crossover Cobalt Oxides

Yoichi Okimoto, Tadahiko Ishikawa, Shin-ya Koshihara

Springer Series in Materials Science   305   103 - 122   2021

Ultrafast Nonlinear Spectroscopy in (111) Oriented Bismuth Ferrite Oxide Reviewed

Hongwu Yu, Kou Takubo, Tadahiko Ishikawa, Shin-ya Koshihara, Masaki Hada, Toru Asaka, Keita Ozawa, Kei Shigematsu, Masaki Azuma, Yoichi Okimoto

Journal of the Physical Society of Japan   89 ( 6 )   063401 - 063401   2020.6

Ultrafast isomerization-induced cooperative motions to higher molecular orientation in smectic liquid-crystalline azobenzene molecules Reviewed

Masaki Hada, Daisuke Yamaguchi, Tadahiko Ishikawa, Takayoshi Sawa, Kenji Tsuruta, Ken Ishikawa, Shin-ya Koshihara, Yasuhiko Hayashi, Takashi Kato

Nature Communications   10 ( 1 )   2019.9

Optical Study of Electronic Structure and Photoinduced Dynamics in the Organic Alloy System [(EDO-TTF)0.89(MeEDO-TTF)0.11]2PF6 Reviewed

Ishikawa, Tadahiko, Urasawa, Yohei, Shindo, Taiki, Okimoto, Yoichi, Koshihara, Shin-ya, Tanaka, Seiichi, Onda, Ken, Hiramatsu, Takaaki, Nakano, Yoshiaki, Tanaka, Koichiro, Yamochi, Hideki

Applied Sciences   9 ( 6 )   1174 - 1174   2019.3

Ultrafast Control of Ferroelectricity with Dynamical Repositioning of Protons in a Supramolecular Cocrystal Studied by Femtosecond Nonlinear Spectroscopy Reviewed

Tsugumi Umanodan, Keisuke Kaneshima, Kengo Takeuchi, Nobuhisa Ishii, Jiro Itatani, Hideki Hirori, Yasuyuki Sanari, Koichiro Tanaka, Yoshihiko Kanemitsu, Tadahiko Ishikawa, Shin-ya Koshihara, Sachio Horiuchi, Yoichi Okimoto

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   88 ( 1 )   2019.1

Ultrafast photocontrol of proton-mediated organic ferroelectric cocrystal Reviewed

Umanodan T, Ishikawa T, Koshihara S, Horiuchi S, Okimoto Y

Journal of Physics: Conference Series   1220 ( 1 )   2019

Ultrafast Control of the Polarity of BiCoO3 by Orbital Excitation as Investigated by Femtosecond Spectroscopy Reviewed

Y. Okimoto, S. Naruse, R. Fukaya, T. Ishikawa, S. Koshihara, K. Oka, M. Azuma, K. Tanaka, H. Hirori

PHYSICAL REVIEW APPLIED   7 ( 6 )   064016 - 064016   2017.6

The photoinduced dynamics of X[M(dmit)_2_]_2_ salts Reviewed

Ishikawa, Tadahiko, Hayes, Stuart A, Miller, R J Dwayne, Hada, Masaki, Koshihara, Shinya

Phys. Scr.   92 ( 3 )   034005 - 034005   2017.3

The photoinduced dynamics of X[M(dmit)<inf>2</inf>]<inf>2</inf> salts

Ishikawa, T., Hayes, S.A., Miller, R.J.D., Hada, M., Koshihara, S.

Physica Scripta   92 ( 3 )   2017

Ultrafast Control of the Polarity of BiCoO3 by Orbital Excitation as Investigated by Femtosecond Spectroscopy Reviewed

Okimoto, Y., Naruse, S., Fukaya, R., Ishikawa, T., Koshihara, S., Oka, K., Azuma, M., Tanaka, K., Hirori, H.

Phys. Rev. Appl.   7 ( 6 )   064016 - 064016   2017

Bandgap modulation in photoexcited topological insulator Bi2Te3 via atomic displacements Reviewed

Masaki Hada, Katsura Norimatsu, Sei'ichi Tanaka, Sercan Keskin, Tetsuya Tsuruta, Kyushiro Igarashi, Tadahiko Ishikawa, Yosuke Kayanuma, R. J. Dwayne Miller, Ken Onda, Takao Sasagawa, Shin-ya Koshihara, Kazutaka G. Nakamura

JOURNAL OF CHEMICAL PHYSICS   145 ( 2 )   024504   2016.7

21pPSA-37 Photo Induced Dynamics in Alloy [(MeEDO-TTF)_<0.11>(EDO-TTF)_<0.89>]_2PF_6

Urasawa Y., Shionuma K., Ishikawa T., Okimoto Y., Onda K., Koshihara S., Hiramatsu T., Yamochi H.

Meeting Abstracts of the Physical Society of Japan   71   1596 - 1596   2016

Photoinduced dynamics in Me₄P[Pt(dmit)₂]₂

Ishikawa T., Shionuma K., Okimoto Y., Onda K., Koshihara S., Hayes S. A., Miller R.J.D., Hada M., Nomura M., Kato R.

Meeting Abstracts of the Physical Society of Japan   71   1234 - 1234   2016

20pBH-2 Proton Dynamics in Organic Ferroelectric [H-dppz][Hca] III

Umanodan T., Okimoto Y., Tanaka S., Naruse S., Onda K., Ishikawa T., Koshihara S., Horiuchi S.

Meeting Abstracts of the Physical Society of Japan   71   1489 - 1489   2016

Direct observations of the photoinduced change in dimerization in K-TCNQ Reviewed

Ishikawa Tadahiko, Hosoda Ryosuke, Okimoto Yoichi, Tanaka Sei'ichi, Onda Ken, Koshihara Shinya, Kumai Reiji

Physical Review B   93 ( 19 )   pp. 195130   2016

Femtosecond nonlinear optical spectroscopy in Organic Ferroelectric [H-66dmbp][Hca]

Umanodan T., Okimoto Y., Akutsu Y., Tanaka S., Onda K., Ishikawa T., Koshihara S., Horiuchi S.

Meeting Abstracts of the Physical Society of Japan   71   1280 - 1280   2016

Direct observation of collective modes coupled to molecular orbital-driven charge transfer Reviewed

Tadahiko Ishikawa, Stuart A. Hayes, Sercan Keskin, Gaston Corthey, Masaki Hada, Kostyantyn Pichugin, Alexander Marx, Julian Hirscht, Kenta Shionuma, Ken Onda, Yoichi Okimoto, Shin-ya Koshihara, Takashi Yamamoto, Hengbo Cui, Mitsushiro Nomura, Yugo Oshima, Majed Abdel-Jawad, Reizo Kato, R. J. Dwayne Miller

SCIENCE   350 ( 6267 )   1501 - 1505   2015.12

Ultrafast electronic state conversion at room temperature utilizing hidden state in cuprate ladder system Reviewed

R. Fukaya, Y. Okimoto, M. Kunitomo, K. Onda, T. Ishikawa, S. Koshihara, H. Hashimoto, S. Ishihara, A. Isayama, H. Yui, T. Sasagawa

NATURE COMMUNICATIONS   6   8519   2015.10

Local response to light excitation in the charge-ordered phase of &lt;math&gt; &lt;mrow&gt; &lt;msub&gt; &lt;mrow&gt; &lt;mo&gt;(&lt;/mo&gt; &lt;mrow&gt; &lt;mi&gt;EDO&lt;/mi&gt; &lt;mtext&gt;−&lt;/mtext&gt; &lt;mi&gt;TTF&lt;/mi&gt; &lt;/mrow&gt; &lt;mo&gt;)&lt;/mo&gt; &lt;/mrow&gt; &lt;mn&gt;2&lt;/mn&gt; &lt;/msub&gt; &lt;mi&gt;Sb&lt;/mi&gt; &lt;msub&gt; &lt;mi mathvariant=&quot;normal&quot;&gt;F&lt;/mi&gt; &lt;mn Reviewed

Servol, Marina, Moisan, Nicolas, Collet, Eric, Cailleau, Hervé, Kaszub, Wawrzyniec, Toupet, Loïc, Boschetto, Davide, Ishikawa, Tadahiko, Moréac, Alain, Koshihara, Shinya, Maesato, Mitsuhiko, Uruichi, Mikio, Shao, Xiangfeng, Nakano, Yoshiaki, Yamochi, Hideki, Saito, Gunzi, Lorenc, Maciej

Physical Review B   92 ( 2 )   024304 - 024304   2015.7

Local response to light excitation in the charge-ordered phase of (EDO-TTF)2Sb F6 Reviewed

Marina Servol, Nicolas Moisan, Eric Collet, Hervé Cailleau, Wawrzyniec Kaszub, Loïc Toupet, Davide Boschetto, Tadahiko Ishikawa, Alain Moréac, Shinya Koshihara, Mitsuhiko Maesato, Mikio Uruichi, Xiangfeng Shao, Yoshiaki Nakano, Hideki Yamochi, Gunzi Saito, Maciej Lorenc

Physical Review B - Condensed Matter and Materials Physics   92 ( 2 )   024304   2015.7

Different Time-Scale Relaxation Dynamics in Organic Supramolecular Ferroelectrics Studied by Linear and Nonlinear Spectroscopy Reviewed

Tsugumi Umanodan, Sei'ichi Tanaka, Suguru Naruse, Tadahiko Ishikawa, Ken Onda, Shin-ya Koshihara, Sachio Horiuchi, Yoichi Okimoto

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   84 ( 7 )   073707   2015.7

18pPSA-57 Photoinduced dynamics in K-TCNQ studied by time-resolved vibrational spectroscopy II.

Hosoda R., Okimoto Y., Tanaka S., Ishikawa T., Onda K., Koshihara S., Kumai R.

Meeting Abstracts of the Physical Society of Japan   70   1308 - 1308   2015

22pCP-7 Direct Observation of photo-induced dynamics of structural change using time-resolved electron diffraction technique in Me_4P[Pt(dmit)_2]_2II

Ishikawa T., Shionuma K., Okimoto Y., Onda K., Koshihara S., Hayes Stuart A., Keskin Sercan, Corthey Gaston, Hada M., Pichugin Kostyantyn, Marx Alexander, Miller R.J.D., Kazub Wawrzyniec, Lorenc Maciej, Yamamoto T., Nomura M., Cui Hengbo, kato R.

Meeting Abstracts of the Physical Society of Japan   70   1519 - 1519   2015

Coherent dynamics of photoinduced phase formation in a strongly correlated organic crystal Reviewed

Yoshitaka Matsubara, Sho Ogihara, Jiro Itatani, Nobuya Maeshima, Kenji Yonemitsu, Tadahiko Ishikawa, Yoichi Okimoto, Shin-ya Koshihara, Takaaki Hiramatsu, Yoshiaki Nakano, Hideki Yamochi, Gunzi Saito, Ken Onda

PHYSICAL REVIEW B   89 ( 16 )   161102   2014.4

Unconventional photonic change of charge-density-wave phase in two-leg ladder cuprate Sr14Cu24O41 Reviewed

Ryo Fukaya, Yoichi Okimoto, Miyako Kunitomo, Tadahiko Ishikawa, Ken Onda, Shin-Ya Koshihara, Akira Isayama, Takao Sasagawa

Journal of the Physical Society of Japan   82 ( 8 )   083707   2013.8

Ultrafast real space dynamics of photoexcited state in a layered perovskite-type spin crossover oxide La<inf>1.5</inf>Sr<inf>0.5</inf>CoO <inf>4</inf> Reviewed

Yoichi Okimoto, Tsugumi Egawa, Ryo Fukaya, Yoshitaka Matsubara, Yuki Yamada, Nao Yamaya, Tadahiko Ishikawa, Ken Onda, Shin Ya Koshihara, Hiroki Taniguchi, Mitsuru Itoh, Akira Isayama, Takao Sasagawa

Journal of the Physical Society of Japan   82 ( 7 )   074721 - 074721   2013.7

Time-Resolved Infrared Vibrational Spectroscopy of the Photoinduced Phase Transition of Pd(dmit)(2) Salts Having Different Orders of Phase Transition Reviewed

Naoto Fukazawa, Takahiro Tanaka, Tadahiko Ishikawa, Yoichi Okimoto, Shin-ya Koshihara, Takashi Yamamoto, Masafumi Tamura, Reizo Kato, Ken Onda

JOURNAL OF PHYSICAL CHEMISTRY C   117 ( 25 )   13187 - 13196   2013.6

The Earliest Stage of Photoinduced Phase Transition in a Strongly Correlated Organic System Using a 10-fs Pulse Reviewed

Ken Onda, Yoshitaka Matsubara, Tadahiko Ishikawa, Yoichi Okimoto, Shin-ya Koshihara, Takaaki Hiramatsu, Gunzi Saito, Yoshiaki Nakano, Hideki Yamochi

XVIIITH INTERNATIONAL CONFERENCE ON ULTRAFAST PHENOMENA   41   2013

CCDC 913476: Experimental Crystal Structure Determination Reviewed

Shirahata T, Shiratori K, Kumeta S, Kawamoto T, Ishikawa T, Koshihara S, Nakano Y, Yamochi H, Misaki Y, Mori T

2013

Photoinduced Phase Transition in Strongly Electron-Lattice and Electron-Electron Correlated Molecular Crystals Reviewed

Tadahiko Ishikawa, Ken Onda, Shin-ya Koshihara

CRYSTALS   2 ( 3 )   1067 - 1083   2012.9

Structural Transitions from Triangular to Square Molecular Arrangements in the Quasi-One-Dimensional Molecular Conductors (DMEDO-TTF)(2)XF6 (X = P, As, and Sb) Reviewed

Takashi Shirahata, Keita Shiratori, Shouhei Kumeta, Tadashi Kawamoto, Tadahiko Ishikawa, Shin-ya Koshihara, Yoshiaki Nakano, Hideki Yamochi, Yohji Misaki, Takehiko Mori

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   134 ( 32 )   13330 - 13340   2012.8

Probing the metal-insulator phase transition in the. DMEDO-EBDT/2PF6 single crystal by optical measurements Reviewed

T. Ishikawa, M. Kitayama, A. Chono, K. Onda, Y. Okimoto, S. Koshihara, Y. Nakano, H. Yamochi, T. Morikawa, T. Shirahata, Y. Misaki

JOURNAL OF PHYSICS-CONDENSED MATTER   24 ( 19 )   195501   2012.5

Charge and Structural Dynamics in Photoinduced Phase Transition of (EDO-TTF)(2)PF6 Examined by Picosecond Time-Resolved Vibrational Spectroscopy Reviewed

Naoto Fukazawa, Minoru Shimizu, Tadahiko Ishikawa, Yoichi Okimoto, Shin-ya Koshihara, Takaaki Hiramatsu, Yoshiaki Nakano, Hideki Yamochi, Gunzi Saito, Ken Onda

JOURNAL OF PHYSICAL CHEMISTRY C   116 ( 9 )   5892 - 5899   2012.3

Slow Dynamics of the Photoinduced Phase Transition in Pd(dmit)(2) Salts (dmit=1,3-dithiol-2-thione-4,5-dithiolate) Reviewed

T. Ishikawa, T. Tanaka, N. Fukazawa, Y. Matsubara, Y. Okimoto, K. Onda, S. Koshihara, M. Tamura, R. Kato

ACTA PHYSICA POLONICA A   121 ( 2 )   316 - 318   2012.2

Photoinduced Phase Transitions in Strongly Correlated Electron Systems Reviewed

Koshihara Shin-ya, Adachi Shinichi, Okimoto Yoichi, Ishikawa Tadahiko, Fukaya Ryo, Fukumoto Keiki, Hoshino Manabu, Onda Ken, IEEE

2012 Conference on Lasers and Electro-Optics (Cleo)   2012

Photoinduced ionic to neutral phase transition in TTF-CA studied by time-resolved infrared vibrational spectroscopy Reviewed

Y. Matsubara, T. Yoshida, T. Ishikawa, Y. Okimoto, S. Y. Koshihara, K. Onda

Acta Physica Polonica A   121 ( 2 )   340 - 342   2012

Femtosecond reflection spectroscopy in La1.5Sr 0.5CoO4 Reviewed

T. Egawa, Y. Okimoto, R. Fukaya, K. Onda, T. Ishikawa, S. Y. Koshihara, A. Isayama, T. Sasagawa

Acta Physica Polonica A   121 ( 2 )   307 - 309   2012

Photo-induced structural changes at a surface of organic single crystals observed by vibrational sum frequency generation spectroscopy Reviewed

K. Fukumoto, N. Fukazawa, T. Ishikawa, S. Koshihara, H. M. Yamamoto, R. Kato, K. Onda

Acta Physica Polonica A   121 ( 2 )   313 - 315   2012

Search for the photo-induced hidden phase in inorganic and organic systems Reviewed

S. Koshihara, K. Onda, Y. Okimoto, T. Ishikawa

Acta Physica Polonica A   121 ( 2 )   328 - 331   2012

Ultrafast dynamics of photoinduced electronic phase modulation in ladder cuprate of Sr14-xCaxCu24O41 Reviewed

R. Fukaya, M. Kunitomo, Y. Okimoto, T. Ishikawa, K. Onda, S. Koshihara, H. Yui, T. Sasagawa

Acta Physica Polonica A   121 ( 2 )   310 - 312   2012

Photoinduced phase transition in Pr0.5Ca0.5CoO 3 studied by sequential pulse excitations Reviewed

K. Seko, Y. Okimoto, M. Kurashima, R. Fukaya, T. Egawa, T. Ishikawa, K. Onda, S. Y. Koshihara, T. Kyomen, M. Itoh

Acta Physica Polonica A   121 ( 2 )   369 - 371   2012

Photoinduced Neutral-to-Ionic Phase Transition in Tetrathiafulvalene-p-chloranil Studied by Time-Resolved Vibrational Spectroscopy Reviewed

Yoshitaka Matsubara, Yoichi Okimoto, Tatsushi Yoshida, Tadahiko Ishikawa, Shin-ya Koshihara, Ken Onda

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   80 ( 12 )   2011.12

Ultrafast spectral weight transfer in RBaCo2O6-delta (R = Sm, Gd, and Tb): Role of electronic correlation in a photoinduced phase transition Reviewed

Okimoto Y, Miyata T, Endo M. S, Kurashima M, Onda K, Ishikawa T, Koshihara S, Lorenc M, Collet E, Cailleau H, Arima T

PHYSICAL REVIEW B   84 ( 12 )   2011.9

Ultrafast spectral weight transfer in RBaCo2O 6-δ (R=Sm, Gd, and Tb): Role of electronic correlation in a photoinduced phase transition Reviewed

Y. Okimoto, T. Miyata, M. S. Endo, M. Kurashima, K. Onda, T. Ishikawa, S. Koshihara, M. Lorenc, E. Collet, H. Cailleau, T. Arima

Physical Review B - Condensed Matter and Materials Physics   84 ( 12 )   2011.9

Acceleration of domain wall movement by photoirradiation in perovskite-type cobaltite Reviewed

Y. Okimoto, M. Kurashima, K. Seko, T. Ishikawa, K. Onda, S. Koshihara, T. Kyomen, M. Itoh

Physical Review B - Condensed Matter and Materials Physics   83 ( 16 )   2011.4

Photoinduced Dynamics of a Quasi-1D Organic Conductor over a Range from 10 fs to 100 ps Reviewed

K. Onda, S. Ogihara, J. Itatani, T. Ishikawa, Y. Okimoto, S. Koshihara, X.F. Shao, Y. Nakano, H. Yamochi, G. Saito

Ultrafast Phenomena XVII, Oxford University Press, New York   188 - 190   2011

Ultrafast and large reflectivity change by ultraviolet excitation of the metallic phase in the organic conductor (EDO-TTF)2PF6 Reviewed

K. Onda, M. Shimizu, F. Sakaguchi, S. Ogihara, T. Ishikawa, Y. Okimoto, S. Koshihara, X. F. Shaod, Y. Nakano, H. Yamochi, G. Saito

Physica B: Condensed Matter   405 ( 11 )   S350 - S352   2010.6

Photo-Induced In-Gap States in SrTiO3 Probed by Photoemission Spectroscopy under Ultraviolet Illumination Reviewed

Takashi Mizokawa, Norihisa Takaiwa, Yukihiro Fujiwara, Takashi Iida, Kou Takubo, Jin-Young Son, Tadahiko Ishikawa, Mitsuru Itoh, Masaki Takesada

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   79 ( 4 )   2010.4

Large and ultrafast photoinduced reflectivity change in the charge separated phase of Et2Me2Sb[Pd(1,3-dithiol-2-thione-4,5-dithiolate)(2)](2)

T. Ishikawa, N. Fukazawa, Y. Matsubara, R. Nakajima, K. Onda, Y. Okimoto, S. Koshihara, M. Lorenc, E. Collet, M. Tamura, R. Kato

PHYSICAL REVIEW B   80 ( 11 )   1 - 115108   2009.9

Ultrasonic propagation of a metallic domain in Pr0.5Ca0.5CoO3 undergoing a photoinduced insulator-metal transition Reviewed

Y. Okimoto, X. Peng, M. Tamura, T. Morita, K. Onda, T. Ishikawa, S. Koshihara, N. Todoroki, T. Kyomen, M. Itoh

Physical Review Letters   103 ( 2 )   2009.8

Femtosecond time-resolved reflection spectroscopy in Pr1-xCaxMnO3 (x=0.37) Reviewed

Xianzhou Peng, Yoichi Okimoto, Masato Endo, Ken Sato, Takeshi Aizawa, Ken Onda, Tadahiko Ishikawa, Shin-ya Koshihara, Taka-hisa Arima

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 6, NO 1   6 ( 1 )   252 - +   2009

Probing the photoinduced phase transition in (C2H 5)2(CH3)2Sb[Pd(dmit) 2]2 Reviewed

N. Fukazawa, T. Ishikawa, R. Nakajima, Y. Matsubara, M. Kitayama, S. Koshihara, Y. Okimoto, K. Onda, M. Lorenc, E. Collet, M. Tamura, R. Kato

Journal of Physics: Conference Series   148   2009

The photo-induced phase transition in Et(2)Me(2)Sb[Pd(dmit)(2)](2) Reviewed

Ishikawa Tadahiko, Fukazawa Naoto, Matsubara Yoshitaka, Nakajima Ryohei, Onda Ken, Okimoto Yoichi, Koshihara Shin-ya, Tamura Masafumi, Kato Reizo, Lorenc Maciej, Collet Eric, Itoh T, Tanaka K, Schreiber M

Physica Status Solidi C - Current Topics in Solid State Physics, Vol 6, No 1   6 ( 1 )   112 - 115   2009

Excitation photon energy dependence of photo-induced phase transition in (EDO-TTF)2PF6 Reviewed

S. Ogihara, K. Onda, M. Shimizu, T. Ishikawa, Y. Okimoto, X. F. Shao, Y. Nakano, H. Yamochi, G. Saito, S. Koshihara

Journal of Physics: Conference Series   148   012008   2009

Photoinduced insulator-metal transition in Pr0.5Ca 0.5CoO3 as studied by femtosecond spectroscopy Reviewed

Yoichi Okimoto, Xianzhou Peng, Mieko Tamura, Takaaki Morita, Ken Onda, Tadahiko Ishikawa, Shin-Ya Koshihara, Naoyuki Todoroki, Toru Kyomen, Mitsuru Itoh

Journal of Physics: Conference Series   148   2009

Anomalous photo-induced response by double-pulse excitation in the organic conductor (EDO-TTF)(2)PF6 Reviewed

Ken Onda, Sho Ogihara, Tadahiko Ishikawa, Yoichi Okimoto, Xiangfeng Shao, Yoshiaki Nakano, Hideki Yamochi, Gunzi Saito, Shin-ya Koshihara

LXIII YAMADA CONFERENCE ON PHOTO-INDUCED PHASE TRANSITION AND COOPERATIVE PHENOMENA (PIPT3)   148   2009

Effects of Chemically Induced Contraction of a Coordination Polyhedron on the Dynamical Magnetism of Bis(phthalocyaninato)disprosium, a Single-4f-Ionic Single-Molecule Magnet with a Kramers Ground State Reviewed

Naoto Ishikawa, Yoshifumi Mizuno, Satoshi Takamatsu, Tadahiko Ishikawa, Shin-ya Koshihara

INORGANIC CHEMISTRY   47 ( 22 )   10217 - 10219   2008.11

Photoinduced change in the charge order pattern in the quarter-filled organic conductor (EDO-TTF)(2)PF6 with a strong electron-phonon interaction Reviewed

Ken Onda, Sho Ogihara, Kenji Yonemitsu, Nobuya Maeshima, Tadahiko Ishikawa, Yoichi Okimoto, Xiangfeng Shao, Yoshiaki Nakano, Hideki Yamochi, Gunzi Saito, Shin-ya Koshihara

PHYSICAL REVIEW LETTERS   101 ( 6 )   2008.8

Photoinduced change in the charge order pattern in the quarter-filled organic conductor (EDO-TTF)(2)PF6 with a strong electron-phonon interaction Reviewed

Ken Onda, Sho Ogihara, Kenji Yonemitsu, Nobuya Maeshima, Tadahiko Ishikawa, Yoichi Okimoto, Xiangfeng Shao, Yoshiaki Nakano, Hideki Yamochi, Gunzi Saito, Shin-ya Koshihara

PHYSICAL REVIEW LETTERS   101 ( 6 )   2008.8

The photo-induced phase and coherent phonon in the organic conductor (EDO-TTF)(2)PF6 Reviewed

Ken Onda, Sho Ogihara, Tadahiko Ishikawa, Yoichi Okimoto, Xiangfeng Shao, Hideki Yamochi, Gunzi Saito, Shin-ya Koshihara

JOURNAL OF PHYSICS-CONDENSED MATTER   20 ( 22 )   2008.6

The photo-induced phase and coherent phonon in the organic conductor (EDO-TTF)(2)PF6 Reviewed

Ken Onda, Sho Ogihara, Tadahiko Ishikawa, Yoichi Okimoto, Xiangfeng Shao, Hideki Yamochi, Gunzi Saito, Shin-ya Koshihara

JOURNAL OF PHYSICS-CONDENSED MATTER   20 ( 22 )   2008.6

Ultrafast gigantic photo-response in charge-ordered organic salt (EDO-TTF)2PF6 on 10-fs time scales Reviewed

J. Itatani, M. Rini, A. Cavalleri, K. Onda, T. Ishikawa, S. Ogihara, S. Koshihara, X. Shao, H. Yamochi, G. Saito, R. W. Schoenlein

Conference on Quantum Electronics and Laser Science (QELS) - Technical Digest Series   3293 - 3294   2008

Ultrafast gigantic photo-response in charge-ordered organic salt (EDO-TTF)2PF6 on 10-fs time scales Reviewed

J. Itatani, M. Rini, A. Cavalleri, K. Onda, T. Ishikawa, S. Ogihara, S. Koshihara, X. Shao, H. Yamochi, G. Saito, R. W. Schoenlein

Conference on Quantum Electronics and Laser Science (QELS) - Technical Digest Series   92   185 - 187   2008

Significant increase of the barrier energy for magnetization reversal of a single-4f-ionic single-molecule magnet by a longitudinal contraction of the coordination space Reviewed

Satoshi Takamatsu, Tadahiko Ishikawa, Shin-ya Koshihara, Naoto Ishikawa

INORGANIC CHEMISTRY   46 ( 18 )   7250 - 7252   2007.9

Ultrafast gigantic photo-response in (EDO-TTF)(2)PF6 initiated by 10-fs laser pulses Reviewed

Jiro Itatani, Matteo Rini, Andrea Cavalleri, Ken Onda, Tadahiko Ishikawa, Shin-ya Koshihara, Xiangfeng Shao, Hideki Yamochi, Gunzi Saito, Robert W. Shoenlein

ULTRAFAST PHENOMENA XV   88   621 - +   2007

Gigantic and Ultrafast Photoresponse in Molecular Charge \nOrdering System" Reviewed

M. Chollet, S. Koshihara, L. Guerin, T. Ishikawa, K. Matsuda, T. Hasegawa, H. Yamochi, G.Saito, R. Tazaki, S. Adachi

Multifunctional Conducting Molecular Materials, eds. G. Saito, F. Wudl, R.C. Haddon, K. Tanigaki, T. Enoki, H.E. Katz, M. Maesato, RSC Publishing, Cambridge, UK. (2007), pp. 173-180 ・   2007

High carrier mobility coupled with quantum paraelectric fluctuation Reviewed

T. Ishikawa, M. Kurita, S. Koshihara, M. Takesada, M. Itoh

FERROELECTRICS   346   10 - 15   2007

Static magnetic-field-induced phase lag in the magnetization response of tris(dipicolinato)lanthanides Reviewed

M Sugita, N Ishikawa, T Ishikawa, S Koshihara, Y Kaizu

INORGANIC CHEMISTRY   45 ( 3 )   1299 - 1304   2006.2

Ultrafast gigantic photo-response in (EDO-TTF)2PF6 initiated by 10-fs laser pulses

Jiro Itatani, Matteo Rini, Andrea Cavalleri, Ken Onda, Tadahiko Ishikawa, Shin-ya Koshihara, Xiangfeng Shao, Hideki Yamochi, Gunzi Saito, Robert W. Shoenlein

Optics InfoBase Conference Papers   2006

High Carrier Mobility Coupled with Quantum Paraelectric Fluctuation

Ishikawa Tadahiko, Kurita Masaaki, Koshihara Shin-ya, Takesada Masaki, Itoh Mitsuru

Abstract book of Russia/CIS/Baltic/Japan Symposium on Ferroelectricity   2006   24 - 24   2006

Intramolecular nitro-assisted proton transfer in photoirradiated 2-(2',4'-dinitrobenzyl)pyridine: Polarized optical spectroscopic study and electronic structure calculations Reviewed

P Naumov, K Sakurai, T Ishikawa, J Takahashi, SY Koshihara, Y Ohashi

JOURNAL OF PHYSICAL CHEMISTRY A   109 ( 32 )   7264 - 7275   2005.8

Ultra-fast and sensitive photo-induced phase switching in (EDO-TTF)(2)PF6 Reviewed

M Chollet, L Guerin, N Uchida, S Fukaya, T Ishikawa, SY Koshihara, K Matsuda, H Yamochi, A Ota, G Saito

JOURNAL OF LUMINESCENCE   112 ( 1-4 )   275 - 278   2005.4

Gigantic photoresponse in 1/4-filled-band organic salt (EDO-TTF) 2PF 6 Reviewed

Matthieu Chollet, Laurent Guerin, Naoki Uchida, Souichi Fukaya, Hiroaki Shimoda, Tadahiko Ishikawa, Kazunari Matsuda, Takumi Hasegawa, Akira Ota, Hideki Yamochi, Gunzi Saito, Ryoko Tazaki, Shin-Ichi Adachi, Shin-Ya Koshihara

Science   307 ( 5706 )   86 - 89   2005.1

Ultrafast infrared spectroscopic study of the photo-induced phase transition in (EDO-TTF)2PF6 Reviewed

Ken Onda, Tadahiko Ishikawa, Matthieu Chollet, Xiangfeng Shao, Hideki Yamochi, Gunzi Saito, Shin-Ya Koshihara

Journal of Physics: Conference Series   21 ( 1 )   216 - 220   2005.1

Ultrafast photo-induced metal-insulator transition in 1/4 filled organic crystal (EDO-TTF)2PF6 Reviewed

Matthieu Chollet, Laurent Guerin, Naoki Uchida, Souichi Fukaya, Hiroaki Shimoda, Tadahiko Ishikawa, Kazunari Matsuda, Takumi Hasegawa, Akira Ota, Hideki Yamochi, Gunzi Saito, Ryoko Tazaki, Shin-Ichi Adachi, Shin-Ya Koshihara

Journal of Physics: Conference Series   21 ( 1 )   130 - 135   2005.1

Investigation of the ferroelectric transition in (SrTiO3)-O-18 under hydrostatic pressure Reviewed

M Kurita, T Ishikawa, S Koshihara, M Itoh, M Takesada, A Moreac, JC Ameline

JOURNAL OF THE KOREAN PHYSICAL SOCIETY   46 ( 1 )   190 - 191   2005.1

Fast photo-induced phase switching in organic conductor crystal; (EDO-TTF)(2)PF6 Reviewed

M Chollet, L Guerin, N Uchida, S Fukaya, T Ishikawa, S Koshihara, K Matsuda, A Ota, H Yamochi, G Saito

ULTRAFAST PHENOMENA XIV   79   771 - 773   2005

Ultrafast infrared spectroscopic study of the photo-induced phase transition in (EDO-TTF)2PF6 Reviewed

Ken Onda, Tadahiko Ishikawa, Matthieu Chollet, Shao Xiangfeng, Hideki Yamohchi, Gunzi Saito, Shin-Ya Koshihara

IQEC, International Quantum Electronics Conference Proceedings   2005   8 - 9   2005

Preparation of polyacetylenes via organometallic C-C coupling reactions Reviewed

Takakazu Yamamoto, Kazuaki Kobayashi, Takuma Yasuda, Zhen-Hua Zhou, Isao Yamaguchi, Tadahiko Ishikawa, Shin-Ya Koshihara

Polymer Bulletin   52 ( 5 )   315 - 319   2004.11

Upward temperature shift of the intrinsic phase lag of the magnetization of bis(phthalocyaninato)terbium by ligand oxidation creating an S = 1/2 spin Reviewed

Naoto Ishikawa, Miki Sugita, Naohiro Tanaka, Tadahiko Ishikawa, Shin-Ya Koshihara, Youkoh Kaizu

Inorganic Chemistry   43 ( 18 )   5498 - 5500   2004.9

Mononuclear lanthanide complexes with a long magnetization relaxation time at high temperatures: A new category of magnets at the single-molecular level Reviewed

N Ishikawa, M Sugita, T Ishikawa, S Koshihara, Y Kaizu

JOURNAL OF PHYSICAL CHEMISTRY B   108 ( 31 )   11265 - 11271   2004.8

Isotope effect on photoconductivity in quantum paraelectric SrTiO3 Reviewed

T Ishikawa, M Kurita, H Shimoda, Y Sakano, S Koshihara, M Itoh, M Takesada

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   73 ( 7 )   1635 - 1638   2004.7

Ultrafast photo-response in (EDO)(2)PF6 Reviewed

N Uchida, SY Koshihara, T Ishikawa, A Ota, S Fukaya, M Chollet, H Yamochi, G Saito

JOURNAL DE PHYSIQUE IV   114   143 - 145   2004.4

Giant photoconductivity in quantum paraelectric oxides

T Ishikawa, M Itoh, M Kurita, H Shimoda, M Takesada, T Yagi, S Koshihara

FERROELECTRICS   298 ( No. 1 )   141 - 143   2004

Photoinduced phenomena in quantum paraelectric oxides by ultraviolet laser irradiation Reviewed

M Takesada, T Yagi, M Itoh, T Ishikawa, S Koshihara

FERROELECTRICS   298   317 - 323   2004

Preparation of a new poly(p-phenylene) type polymer, poly(pyrazine-2,5-diyl), with a coplanar structure Reviewed

Takakazu Yamamoto, Yoshiki Fujiwara, Hiroki Fukumoto, Yoshiyuki Nakamura, Shin-ya Koshihara, Tadahiko Ishikawa

Polymer   44 ( 16 )   4487 - 4490   2003.7

Lanthanide double-decker complexes functioning as magnets at the single-molecular level Reviewed

N Ishikawa, M Sugita, T Ishikawa, S Koshihara, Y Kaizu

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   125 ( 29 )   8694 - 8695   2003.7

Carrier-density dependence of magnetic and magneto-optical properties of (Ga,Mn)As Reviewed

T Komori, T Ishikawa, T Kuroda, J Yoshino, F Minami, S Koshihara

PHYSICAL REVIEW B   67 ( 11 )   2003.3

Carrier-density dependence of magnetic and magneto-optical properties of (Ga,Mn)As

T. Komori, T. Ishikawa, T. Kuroda, J. Yoshino, F. Minami, S. Koshihara

Physical Review B - Condensed Matter and Materials Physics   67 ( 11 )   1152031 - 1152036   2003.3

New class of photo-induced cooperative phenomena in organic and inorganic hybrid complexes Reviewed

Y Ogawa, S Koshihara, M Takesada, T Ishikawa

PHASE TRANSITIONS   75 ( 7-8 )   683 - 688   2002.10

Effect of the magnetic field on the dynamics of the cooperative photoinduced spin-state transition and relaxation Reviewed

Y. Ogawa, Y. Ogawa, Y. Ogawa, T. Ishikawa, S. Koshihara, S. Koshihara, K. Boukheddaden, F. Varret

Physical Review B - Condensed Matter and Materials Physics   66 ( 7 )   731041 - 731044   2002.8

Effect of the magnetic field on the dynamics of the cooperative photoinduced spin-state transition and relaxation Reviewed

Y Ogawa, T Ishikawa, S Koshihara, K Boukheddaden, F Varret

PHYSICAL REVIEW B   66 ( 7 )   2002.8

Spin-state transitions in an iron spin-crossover complex observed with X-ray emission and X-ray absorption Reviewed

H. Osawa, T. Iwazumi, H. Shoji, E. Hirai, T. Nakamura, Y. Ogawa, T. Ishikawa, S. Koshihara, Y. Isozumi, S. Nanao

Phase Transitions   75 ( 7-8 )   919 - 925   2002.1

Electronic and structural phase transition controlled by photo-excitation and magnetic field in spin crossover complex Reviewed

Y Ogawa, SY Koshihara, M Takesada, T Ishikawa

MOLECULAR CRYSTALS AND LIQUID CRYSTALS   379   357 - 364   2002

Dynamics of photoinduced melting of charge/orbital order in a layered manganite La0.5Sr1.5MnO4 Reviewed

T Ogasawara, T Kimura, T Ishikawa, M Kuwata-Gonokami, Y Tokura

PHYSICAL REVIEW B   63 ( 11 )   2001.3

Photo-induced phase transitions in organic and inorganic materials Reviewed

S. Koshihara, Y. Ogawa, T. Ishikawa, M. Takesada, A. Oiwa, H. Munekata, T. Komori, J. Yoshino

Current Applied Physics   1 ( 1 )   21 - 27   2001.1

Optical study on the doping and temperature dependence of the anisotropic electronic structure in bilayered manganites: La2-2xSr1+2xMn2O7 (0.3≤x≤0.5) Reviewed

T. Ishikawa, K. Tobe, T. Kimura, T. Katsufuji, Y. Tokura

Physical Review B - Condensed Matter and Materials Physics   62 ( 18 )   12354 - 12362   2000.11

Raman spectroscopy of the charge-orbital ordering in layered manganites Reviewed

K Yamamoto, T Kimura, T Ishikawa, T Katsufuji, Y Tokura

PHYSICAL REVIEW B   61 ( 21 )   14706 - 14715   2000.6

Photo-destruction of charge/orbital order in layered perovskite manganite: La0.5Sr1.5MnO4 Reviewed

T Ogasawara, T Kise, T Ishikawa, M Kuwata-Gonokami, Y Tokura

JOURNAL OF LUMINESCENCE   87-9   639 - 641   2000.5

Optical spectra in Nd1.85Ce0.15CuO4+y crystal: Implication of charge ordering Reviewed

Y Onose, Y Taguchi, T Ishikawa, S Shinomori, K Ishizaka, Y Tokura

ADVANCES IN SUPERCONDUCTIVITY XII   158 - 160   2000

Optical investigation of a nonsuperconducting Nd1.85Ce0.15CuO4+y crystal with possible charge ordering instability Reviewed

Y Taguchi, Y Onose, T Ishikawa, S Shinomori, K Ishizaka, Y Tokura

JOURNAL OF LOW TEMPERATURE PHYSICS   117 ( 5-6 )   1065 - 1069   1999.12

Variation of charge-ordering transitions in R1/3Sr2/3FeO3 (R = La, Pr, Nd, Sm, and Gd) Reviewed

SK Park, T Ishikawa, Y Tokura, JQ Li, Y Matsui

PHYSICAL REVIEW B   60 ( 15 )   10788 - 10795   1999.10

Commensurability effect on the charge ordering of La2-xSrxNiO4 Reviewed

T Katsufuji, T Tanabe, T Ishikawa, S Yamanouchi, Y Tokura, T Kakeshita, R Kajimoto, H Yoshizawa

PHYSICAL REVIEW B   60 ( 8 )   R5097 - R5100   1999.8

Probing charge/orbital correlation in La1.2Sr1.8Mn2O7 by Raman spectroscopy Reviewed

K Yamamoto, T Kimura, T Ishikawa, T Katsufuji, Y Tokura

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   68 ( 8 )   2538 - 2541   1999.8

Anomalous pseudogap formation in a nonsuperconducting crystal of Nd1.85Ce0.15CuO4+gamma: Implication of charge ordering Reviewed

Y Onose, Y Taguchi, T Ishikawa, S Shinomori, K Ishizaka, Y Tokura

PHYSICAL REVIEW LETTERS   82 ( 25 )   5120 - 5123   1999.6

Optical response to orbital and charge ordering in a layered manganite: La1/2Sr3/2MnO4

T Ishikawa, K Ookura, Y Tokura

PHYSICAL REVIEW B   59 ( 13 )   8367 - 8370   1999.4

Optical spectroscopy of charge-ordering transition in La1/3Sr2/3FeO3 Reviewed

T Ishikawa, SK Park, T Katsufuji, T Arima, Y Tokura

PHYSICAL REVIEW B   58 ( 20 )   13326 - 13329   1998.11

Spin-coupled charge dynamics in layered manganite crystals Reviewed

Y Tokura, T Kimura, T Ishikawa

JOURNAL OF THE KOREAN PHYSICAL SOCIETY   33 ( 2 )   168 - 173   1998.8

Charge-gap formation upon the Verwey transition in Fe3O4 Reviewed

SK Park, T Ishikawa, Y Tokura

PHYSICAL REVIEW B   58 ( 7 )   3717 - 3720   1998.8

Optical probe of anisotropic and incoherent charge dynamics in a layered ferromagnet: La1.2Sr1.8Mn2O7 Reviewed

T Ishikawa, T Kimura, T Katsufuji, Y Tokura

PHYSICAL REVIEW B   57 ( 14 )   R8079 - R8082   1998.4

Variation of electronic structure in La1-xSrxMnO3 (0&lt;=x&lt;=0.3) as investigated by optical conductivity spectra Reviewed

Y Okimoto, T Katsufuji, T Ishikawa, T Arima, Y Tokura

PHYSICAL REVIEW B   55 ( 7 )   4206 - 4214   1997.2

Variation of electronic structure f(0⩽x⩽0.3) as investigated by optical conductivity spectra Reviewed

Y. Okimoto, T. Katsufuji, T. Ishikawa, T. Arima, Y. Tokura

Physical Review B - Condensed Matter and Materials Physics   55 ( 7 )   4206 - 4214   1997

Optical spectroscopy of the charge-ordering transition in La1.67Sr0.33NiO4 Reviewed

T Katsufuji, T Tanabe, T Ishikawa, Y Fukuda, T Arima, Y Tokura

PHYSICAL REVIEW B   54 ( 20 )   14230 - 14233   1996.11

CHANGE OF ELECTRONIC-PROPERTIES ON THE DOPING-INDUCED INSULATOR-METAL TRANSITION IN LA1-XSRXVO3 Reviewed

F INABA, T ARIMA, T ISHIKAWA, T KATSUFUJI, Y TOKURA

PHYSICAL REVIEW B   52 ( 4 )   R2221 - R2224   1995.7

ANOMALOUS VARIATION OF OPTICAL-SPECTRA WITH SPIN POLARIZATION IN DOUBLE-EXCHANGE FERROMAGNET - LA1-XSRXMNO3 Reviewed

Y OKIMOTO, T KATSUFUJI, T ISHIKAWA, A URUSHIBARA, T ARIMA, Y TOKURA

PHYSICAL REVIEW LETTERS   75 ( 1 )   109 - 112   1995.7

Pump-probe electron diffraction of BiFeO₃/SrTiO₃(111) thin film

田久保耕, 金子水咲, YU H., 石川忠彦, 沖本洋一, 腰原伸也, 矢嶋渉, 羽田真毅, 桑原真人, 小澤慶太, 伊藤拓真, 重松圭, 重松圭, 東正樹, 東正樹

日本物理学会講演概要集(CD-ROM)   77 ( 2 )   2022

Photo-Induced Structural Dynamics of Transition Metal Compound Observed by Time-resolved Electron Diffraction

羽田真毅, 石川忠彦, 大村訓史, 慶尾直哉, 田久保耕, 鈴木達也, 浅香透, 林靖彦, 阿部伸行, 有馬孝尚, 腰原伸也, 沖本洋一

応用物理学会秋季学術講演会講演予稿集(CD-ROM)   81st   2020

Ferroelectric dynamics control using mid-infrared electric field oscillation in organic ferroelectric Hdppz-Hca

松島遼, QINGYAO Z., 石川忠彦, 腰原伸也, XIA P., 板谷治郎, 堀内佐智雄, 沖本洋一

日本物理学会講演概要集(CD-ROM)   75 ( 1 )   2020

Ferroelectric dynamics control using mid-infrared electric field oscillation in organic ferroelectric Hdppz-Hca

松島遼, 石川忠彦, 腰原伸也, XIA P., 板谷治郎, 堀内佐智雄, 沖本洋一

光物性研究会論文集(CD-ROM)   31st   2020

Non-linear optical spectroscopy of hydrogen-bonded organic antiferroelectrics

ZHOU Q., 松島遼, 石川忠彦, 腰原伸也, 堀内佐智雄, 沖本洋一

光物性研究会論文集(CD-ROM)   31st   2020

Structural analysis of the photoinduced state of the hybrid compounds of spin-crossover complex.

Ishikawa T., Nishida D., Okimoto Y., Koshihara S., Sato A., Ichiyanagi K., Fukaya R., Miyawaki A., Takahashi K.

Meeting Abstracts of the Physical Society of Japan   74.2   1164 - 1164   2019

The photoinduced state of the hybrid system of spin-crossover complex studied by IR spectra

Nishida D., Ishikawa T., Okimoto Y., Koshihara S., Sato A., Ichiyanagi K., Fukaya R., Miyawaki A., Takahashi K.

Meeting Abstracts of the Physical Society of Japan   74.2   1288 - 1288   2019

分子の瞬間の動きをコマ取り撮影できた! : 光機能性物質の動作メカニズムの解明に進展

石川 忠彦, 腰原 伸也, 羽田 真毅

化学 = Chemistry   72 ( 6 )   45 - 49   2017.6

BiFe_0.5Co_0.5O₃薄膜結晶の光相制御

沖本洋一, 成瀬卓, 石川忠彦, 腰原伸也, 深谷亮, 野澤俊介, 清水啓佑, 北條元, 東正樹

KEK Progress Report (Web)   ( 2016-8 )   ROMBUNNO.303 (WEB ONLY)   2017.1

Proton Dynamics and Terahertz Electric Effect in Organic Ferroelectric [H-dppz][Hca]

Umanodan T., Itatani J., Horiuchi S., Okimoto Y., Ishikawa T., Koshihara S., Kaneshima K., Takeuchi K., Ishii N., Hirori H., Tanaka K.

Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   1177 - 1177   2017

分子の変形を2兆分の1秒刻みで撮影─光機能性物質の動作メカニズム解明

石川忠彦, 腰原伸也, 羽田真毅

自動車技術   70 ( 4 )   98 - 99   2016

トポロジカル絶縁体Sb₂Te₃の光励起キャリアダイナミクス

則松桂, 則松桂, 則松桂, 則松桂, 羽田真毅, 羽田真毅, 田中誠一, 山本宗平, 山本宗平, 石川忠彦, 恩田健, 恩田健, 笹川崇男, 笹川崇男, 中村一隆, 中村一隆, 中村一隆

応用物理学会春季学術講演会講演予稿集(CD-ROM)   63rd   2016

「分子が変形する様子を2兆分の1秒刻みでコマ撮り撮影 －光機能性物質の動作メカニズム解明に成功－」

石川忠彦, 腰原伸也, スチュアート・ヘイズ, ドウェイン・ミラー, 加藤礼三, 山本貴

共同プレスリリース 東京工業大学JST   2015

有機強誘電体の高速光応答ダイナミクス

馬ノ段月果, 沖本洋一, 田中誠一, 成瀬卓, 石川忠彦, 恩田健, 恩田健, 腰原伸也, 腰原伸也, 堀内佐智雄, 堀内佐智雄

光物性研究会論文集   26th   2015

フェムト秒時間分解電子線回折法の開発:トポロジカル絶縁体の光誘起構造ダイナミクスの観測

羽田真毅, 羽田真毅, 則松桂, 則松桂, 田中誠一, KESKIN Sercan, 鶴田哲也, 鶴田哲也, 五十嵐九四朗, 石川忠彦, 萱沼洋輔, 萱沼洋輔, MILLER R.J. Dwayne, MILLER R.J. Dwayne, 笹川崇男, 恩田健, 恩田健, 腰原伸也, 腰原伸也, 中村一隆, 中村一隆

応用物理学会春季学術講演会講演予稿集(CD-ROM)   62nd   2015

Photo-control of Ferroelectricity in Ca_2Fe_<2-x>Al_xO_5

Horisumi Y., Seki S., Okimoto Y., Fukaya R., Ishikawa T., Onda K., Koshihara S., Taniguchi H., Itoh M.

Meeting Abstracts of the Physical Society of Japan   68 ( 0 )   676 - 676   2013

電子線回折による有機結晶のピコ秒構造変化 Reviewed

恩田健, 石川忠彦, 沖本洋一, 腰原伸也, 矢持秀起, 加藤礼三, R.J. Dwayne Mi

第7 回分子科学討論会、京都テルサ（京都府民総合交流プラザ)、2013 年9 月24-27 日   2013

梯子型銅酸化物Sr₁₄Cu₂₄O₄₁における光誘起電荷密度波融解ダイナミクス II

深谷亮, 深谷亮, 國友美弥子, 沖本洋一, 石川忠彦, 恩田健, 恩田健, 腰原伸也, 腰原伸也, 諫山晃, 笹川崇男

日本物理学会講演概要集   68 ( 1 )   2013

19aHB-12 Femtosecond Pump-probe Spectroscopy in Ca_2Fe_<2-x>Al_xO_5

Seki S., Okimoto Y., Fukaya R., Ishikawa T., Onda K., Koshihara S., Taniguchi H., Itoh M.

Meeting Abstracts of the Physical Society of Japan   67 ( 0 )   689 - 689   2012

24pBL-7 Photoexcited State in La_<1.5>Sr_<0.5>CoO_4 Studied by Femtosecond Pump-probe Reflection and Transmission Spectroscopy II

Egawa T., Itoh M., Isayama A., Sasagawa T., Okimoto Y., Matsubara Y., Yamada Y., Fukaya R., Ishikawa T., Onda K., Koshihara S., Taniguchi H.

Meeting Abstracts of the Physical Society of Japan   67 ( 0 )   771 - 771   2012

梯子型銅酸化物Sr₁₄Cu₂₄O₄₁における光誘起電荷密度波融解ダイナミクス

深谷亮, 深谷亮, 國友美弥子, 沖本洋一, 松原圭孝, 石川忠彦, 恩田健, 腰原伸也, 腰原伸也, 諫山晃, 由井英臣, 笹川崇男

日本物理学会講演概要集   67 ( 2 )   2012

フェムト秒時間分解全方位分光から見たLa_1.5Sr_0.5CoO₄結晶の励起状態の研究

江川亜美, 沖本洋一, 深谷亮, 石川忠彦, 恩田健, 腰原伸也, 腰原伸也, 諫山晃, 笹川崇男

光物性研究会論文集   23rd   2012

梯子型銅酸化物Sr_14-xCa_xCu₂₄O₄₁における光誘起電子相転移ダイナミクス III

深谷亮, 深谷亮, 國友美弥子, 沖本洋一, 石川忠彦, 恩田健, 腰原伸也, 腰原伸也, 諫山晃, 由井英臣, 笹川崇男

日本物理学会講演概要集   67 ( 1 )   2012

フェムト秒時間分解反射・透過分光から見たLa_1.5Sr_0.5CoO₄結晶の励起状態の研究 II

江川亜美, 沖本洋一, 松原圭孝, 山田友輝, 深谷亮, 石川忠彦, 恩田健, 腰原伸也, 腰原伸也, 谷口博基, 伊藤満, 諫山晃, 笹川崇男

日本物理学会講演概要集   67 ( 1 )   2012

梯子型銅酸化物Sr₁₄Cu₂₄O₄₁における光誘起CDW-金属転移ダイナミクス

國友美弥子, 深谷亮, 深谷亮, 沖本洋一, 石川忠彦, 恩田健, 恩田健, 腰原伸也, 腰原伸也, 諌山晃, 笹川崇男

光物性研究会論文集   23rd   2012

Photoinduced cooperative phenomena and ultrafast dynamics in perovskite-type Co oxide

46 ( 11 )   641 - 650   2011.11

23pTC-10 Photoinduced carrier dynamics in Sr_<14-x>Ca_xCu_<24>O_<41> I; 10 fs time-resolved spectroscopy

Fukaya R., Yui H., Sasagawa T., Kunimtomo M., Matsubara Y., Okimoto Y., Ishikawa T., Onda K., Koshihara S., Taniguchi H., Itoh M.

Meeting Abstracts of the Physical Society of Japan   66 ( 0 )   786 - 786   2011

梯子型銅酸化物Sr_14-xCa_xCu₂₄O₄₁における光誘起電子相転移ダイナミクス I;10fs時間分解分光

深谷亮, 深谷亮, 國友美弥子, 松原圭孝, 沖本洋一, 石川忠彦, 恩田健, 腰原伸也, 腰原伸也, 谷口博基, 伊藤満, 由井英臣, 笹川崇男

日本物理学会講演概要集   66 ( 2 )   2011

フェムト秒時間分解反射・透過分光から見たLa_1.5Sr_0.5CoO₄結晶の励起状態の研究

江川亜美, 沖本洋一, 倉島昌史, 深谷亮, 石川忠彦, 恩田健, 腰原伸也, 腰原伸也, 諫山晃, 笹川崇男

日本物理学会講演概要集   66 ( 2 )   2011

層状コバルト酸化物La_1.5Sr_0.5CoO₄のフェムト秒時間分解反射分光

沖本洋一, 江川亜美, 倉島昌史, 深谷亮, 石川忠彦, 恩田健, 腰原伸也, 腰原伸也, 諫山晃, 笹川崇男

日本物理学会講演概要集   66 ( 1 )   2011

梯子型銅酸化物Sr_14-xCa_xCu₂₄O₄₁における光誘起電子相転移ダイナミクス II;100fs時間分解分光

國友美弥子, 深谷亮, 深谷亮, 沖本洋一, 石川忠彦, 恩田健, 腰原伸也, 腰原伸也, 由井英臣, 笹川崇男

日本物理学会講演概要集   66 ( 2 )   2011

梯子型銅酸化物Sr_14-xCa_xCu₂₄O₄₁における光誘起電子相転移ダイナミクス

國友美弥子, 深谷亮, 深谷亮, 沖本洋一, 石川忠彦, 恩田健, 腰原伸也, 腰原伸也, 由井英臣, 諌山晃, 笹川崇男

光物性研究会論文集   22nd   2011

フェムト秒時間分解反射・透過分光から見たLa_1.5Sr_0.5CoO₄結晶の励起状態の研究

江川亜美, 沖本洋一, 倉島昌史, 深谷亮, 石川忠彦, 恩田健, 腰原伸也, 腰原伸也, 諫山晃, 笹川崇男

光物性研究会論文集   22nd   2011

梯子型銅酸化物Sr_14-xCa_xCu₂₄O₄₁における超高速光誘起キャリアダイナミクス

深谷亮, 深谷亮, 國友美弥子, 沖本洋一, 石川忠彦, 恩田健, 腰原伸也, 腰原伸也, 由井英臣, 笹川崇男

日本物理学会講演概要集   66 ( 1 )   2011

19pPSA-24 Femtosecond reflection spectroscopy in Pr_<1/2>Ca_<1/2>CoO_3

Tamura M., Nozawa S., Ichiyanagi K., Tomita A., Guerin Laurent, Chollet Matthieu, Adachi S., Koshihara S., Okimoto Y., Onda K., Morita T., Ishikawa T., Todoroki N., Kyomen T., Itoh M., Sato T.

Meeting Abstracts of the Physical Society of Japan   62 ( 0 )   722 - 722   2007

A2Bタイプ電荷移動錯体における超高速絶縁体-金属光誘起相転移--光と1/4フィルドと電荷秩序が生み出した「瓢箪から駒」

腰原 伸也, 石川 忠彦, 恩田 健

固体物理   41 ( 3 )   171 - 177   2006.3

Phase transition in (EDO-TTF)2PF6: Domain growth in the thermal hysteresis and ultra-fast photoinduced effects Reviewed

L. Guérin, D. Glijer, N. Moisan, M. Lorenc, M. Buron-Le Cointe, E. Collet, H. Cailleau, A. Ota, G. Saito, X. Shao, H. Yamochi, M. Chollet, K. Onda, T. Ishikawa, S. Koshihara

Journal of Physics: Conference Series   21 ( 1 )   149 - 154   2005.1

ペロフスカイト型量子常誘電性酸化物の巨大な光誘起効果

武貞正樹, 八木駿郎, 伊藤満, 石川忠彦, 腰原伸也

固体物理   40 ( 2 )   35   2005

28pXK-7 Photo effect of perovskite quantum paraelectrics under dc electric field

Takesada M., Taniguchi H., Itoh M., Koshihara S., Ishikawa T., Yagi T.

Meeting Abstracts of the Physical Society of Japan   59 ( 0 )   967 - 967   2004

Spin State Transitions in iron Spin-Crossover complex observed with XES and XAS 2

Osawa H., Isozumi Y., Nanao S., Iwazumi T., Syoji H., Hirai E., Nakamura T., Ogawa Y., Ishikawa T., Koshihara S., Katano R.

Meeting Abstracts of the Physical Society of Japan   56 ( 0 )   600 - 600   2001

Anomalous variation of optical spectra with spin polarization in hole-doped manganese oxides

Y. Okimoto, T. Katsufuji, T. Ishikawa, A. Urushibara, T. Arima, Y. Tokura

Phys. Rev. Lett.   75 ( 1 )   109 - 112   1995

Change of electronic properties on the doping-induced insulator-metal transition in La1-xSrxVO3

F. Inaba, T. Arima, T. Ishikawa, T. Katsufuji, Y. Tokura

Physical Review B   52 ( 4 )   R2221 - R2224   1995

21pPSA-37 Photo Induced Dynamics in Alloy [(MeEDO-TTF)_<0.11>(EDO-TTF)_<0.89>]_2PF_6

Urasawa Y., Shionuma K., Ishikawa T., Okimoto Y., Onda K., Koshihara S., Hiramatsu T., Yamochi H.

Meeting Abstracts of the Physical Society of Japan  2016  The Physical Society of Japan (JPS)

Femtosecond nonlinear optical spectroscopy in Organic Ferroelectric [H-66dmbp][Hca]

Umanodan T., Okimoto Y., Akutsu Y., Tanaka S., Onda K., Ishikawa T., Koshihara S., Horiuchi S.

Meeting Abstracts of the Physical Society of Japan  2016  The Physical Society of Japan

23pCP-5 Proton Dynamics II in Organic Ferroelectrics Hdppz-Hca

Umanodan T., Okimoto Y., Naruse S., Iita Y., Tanaka S., Onda K., Ishikawa T., Koshihara S., Horiuchi S.

2015.3  The Physical Society of Japan (JPS)

22pCP-7 Direct Observation of photo-induced dynamics of structural change using time-resolved electron diffraction technique in Me_4P[Pt(dmit)_2]_2II

Ishikawa T., Shionuma K., Okimoto Y., Onda K., Koshihara S., Hayes Stuart A., Keskin Sercan, Corthey Gaston, Hada M., Pichugin Kostyantyn, Marx Alexander, Miller R.J.D., Kazub Wawrzyniec, Lorenc Maciej, Yamamoto T., Nomura M., Cui Hengbo, kato R.

Meeting Abstracts of the Physical Society of Japan  2015  The Physical Society of Japan (JPS)

18pPSA-57 Photoinduced dynamics in K-TCNQ studied by time-resolved vibrational spectroscopy II.

Hosoda R., Okimoto Y., Tanaka S., Ishikawa T., Onda K., Koshihara S., Kumai R.

Meeting Abstracts of the Physical Society of Japan  2015  The Physical Society of Japan (JPS)

BiFe_0.5Co_0.5O₃薄膜結晶における光による電子状態制御

成瀬卓, 沖本洋一, 馬ノ段月果, 深谷亮, 野澤俊介, 腰原伸也, 腰原伸也, 石川忠彦, 清水啓佑, 北條元, 東正樹

光物性研究会論文集  2015 

10aPS-24 Evaluation of optical properties of ultra-thin conductive molecular crystal, Me_4P|Pt(dmit)_2|_2 showing charge-separated phase transition

Shionuma Kenta, Ishikawa Tadahiko, Onda Ken, Okimoto Yoichi, Koshihara Shinya, Hada Masaki, Keskin Sercan, Miller R. J. Dwayne, Yamamoto Takashi, Nomura Mitsushiro, Kato Reizo

Meeting abstracts of the Physical Society of Japan  2014.8  The Physical Society of Japan (JPS)

10aPS-28 Ultrafast nonlinear spectroscopy in BiCoO_3

Naruse S., Yamaya N., Okimoto Y., Fukaya R., Ishikawa T., Onda K., Koshihara S., Oka K., Azuma M.

Meeting abstracts of the Physical Society of Japan  2014.8  The Physical Society of Japan (JPS)

8aAD-1 Photoinduced dynamics in K-TCNQ studied by time-resolved vibrational spectroscopy

Hosoda R., Okimoto Y., Mukuta T., Tanaka S., Ishikawa T., Koshihara S., Onda K., Kumai R.

Meeting abstracts of the Physical Society of Japan  2014.8  The Physical Society of Japan (JPS)

7pAJ-13 Proton Dynamics in Organic Ferroelectrics Hdppz-Hca

Umanodan T., Okimoto Y., Hosoda R., Naruse S., Tanaka S., Onda K., Ishikawa T., Koshihara S., Horiuchi S.

Meeting abstracts of the Physical Society of Japan  2014.8  The Physical Society of Japan (JPS)

27pCK-3 Real space dynamics of photocarrier in Si

Ueno M., Fukaya R., Egawa T., Ishikawa T., Koshihara S., Okimoto Y.

Meeting abstracts of the Physical Society of Japan  2014.3  The Physical Society of Japan (JPS)

27aAS-8 Direct Observation of photo-induced dynamics of structural change using time-resolved electron diffraction technique in Me_4P[Pt(dmit)_2]_2

Ishikawa T., Okimoto Y., Onda K., Koshihara S., Hayes Stuart A., Keskin Servan, Corthey Gaston, Hada M., Pichugin Kostyantyn, Marx Alexander, Miller R.J. Dwayne, Kazub Wawrzyniec, Lorenc Maciej, Yamamoto T, Nomura M., Kato R.

Meeting abstracts of the Physical Society of Japan  2014.3  The Physical Society of Japan (JPS)

27pAS-4 Time-resolved Raman spectroscopy in layered-perovskite cobalt oxides

Fukaya R., Okimoto Y., Yamaya N., Tanaka S., Onda K., Ishikawa T., Koshihara S., Isayama A., Sasagawa T., Akimitsu J., Horigane K.

Meeting abstracts of the Physical Society of Japan  2014.3  The Physical Society of Japan (JPS)

Observation of photo-induced dynamics in Me_4P[Pt(dmit)_2]_2

Shindo T., Hosoda R., Ishikawa T., Onda K., Okimoto Y., Koshihara S., Nomura M., Kato R., Yamamoto E., Moreac Alain, Kaszub Wawrzyniec, Lorenc Maciej

Meeting abstracts of the Physical Society of Japan  2013.8  The Physical Society of Japan (JPS)

Photonic control of ferroelectricity in spin crossover cobalt oxide BiCoO_3

Fukaya R., Yamaya A., Naruse S., Okimoto Y., Ishikawa T., Onda K., Koshihara S., Oka K., Azuma M.

Meeting abstracts of the Physical Society of Japan  2013.8  The Physical Society of Japan (JPS)

26pEJ-4 Dynamics of photoinduced charge-density-wave melting in Sr_<14>Cu_<24>O_<41> II

Fukaya R., Kunitomo M., Okimoto Y., Ishikawa T., Onda K., Koshihara S., Isayama A., Sasagawa T.

Meeting abstracts of the Physical Society of Japan  2013.3  The Physical Society of Japan (JPS)

28pEJ-2 Imaging of photo-carrier dynamics in semiconductor by time-resolved photoemission electron microscopy

Yamada Y., Fukumoto K., Ishikawa T., Okimoto Y., Onda K., Koshihara S.

Meeting abstracts of the Physical Society of Japan  2013.3  The Physical Society of Japan (JPS)

28pXN-8 Charge separation phase transition in X[Pt(dmit)_2]_2 (X=Me_4P,Me_4Sb) studied by optical spectra

Ishikawa T., Onda K., Okimoto Y., Koshihara S., Nomura M., Kato R., Yamamoto T., Moreac Alain, Kaszub Wawrzyniec, Lorenc Maciej

Meeting abstracts of the Physical Society of Japan  2013.3  The Physical Society of Japan (JPS)

26aEJ-1 Electronic Coherence and Coherent Control of Photoinduced Phase Transition in (EDO-TTF)_2PF_6

Matsubara Y., Ishikawa T., Okimoto Y., Koshihara S., Hiramatsu T., Nakano Y., Yamochi H., Saito G., Onda K.

Meeting abstracts of the Physical Society of Japan  2013.3  The Physical Society of Japan (JPS)

Photo-control of Ferroelectricity in Ca_2Fe_<2-x>Al_xO_5

Horisumi Y., Seki S., Okimoto Y., Fukaya R., Ishikawa T., Onda K., Koshihara S., Taniguchi H., Itoh M.

Meeting Abstracts of the Physical Society of Japan  2013  The Physical Society of Japan

19aHC-8 Dynamics of photoinduced charge-density-wave melting in Sr_<14>Cu_<24>O_<41>

Fukaya R., Kunitomo M., Okimoto Y., Matsubara Y., Ishikawa T., Onda K., Koshihara S., Isayama A., Yui H., Sasagawa T.

Meeting abstracts of the Physical Society of Japan  2012.8  The Physical Society of Japan (JPS)

18aPSB-25 Dynamics of Photoinduced phase transition in Charge-ordered phase of ET_3X_2.

Ishikawa T., Moue K., Fukazawa N., Onda K., Okimoto Y., Koshihara S., Ohnishi K., Yamamoto T., Nakazawa Y.

Meeting abstracts of the Physical Society of Japan  2012.8  The Physical Society of Japan (JPS)

18pHC-8 Observation of the fast photoresponse in covalently bonded Neutral-Ionic complex

Ishikawa T., Shindo T., Tanaka K., Onda K., Okimoto Y., Koshihara S., Nakabayashi K., Miyasaka H.

Meeting abstracts of the Physical Society of Japan  2012.8  The Physical Society of Japan (JPS)

20aHB-9 Carrier dynamics in Si by Pump-Probe Reflection, Transmission and BackReflection spectroscopy

Ueno M., Egawa T., Fukaya R., Ishikawa T., Onda K., Koshihara S., Okimoto Y.

Meeting abstracts of the Physical Society of Japan  2012.8  The Physical Society of Japan (JPS)

18aHC-6 Development of time-resolved photoemission electron microscopy with femtosecond laser

Fukumoto K., Yamada Y., Ishikawa T., Okimoto Y., Onda K., Koshihara S.

Meeting abstracts of the Physical Society of Japan  2012.8  The Physical Society of Japan (JPS)

20aHB-10 Imaging of carrier diffusion at the SiO_2/Si interface by time-resolved photoemission electron microscopy

Yamada Y., Fukumoto K., Ishikawa T., Okimoto Y., Onda K., Koshihara S.

Meeting abstracts of the Physical Society of Japan  2012.8  The Physical Society of Japan (JPS)

24aBL-2 Photoinduced phase transition in X[Pd(dmit)_2]_2 observed hy vibrational spectra

Ishikawa T., Tanaka T., Fukazawa N., Okimoto Y., Onda K., Koshibara S., Hasegawa T., Udagawa M., Yamamoto T., Tamura M., Kato R.

Meeting abstracts of the Physical Society of Japan  2012.3  The Physical Society of Japan (JPS)

24pBL-11 Photoinduced carrier dynamics in Sr_<14-x>Ca_xCu_<24>O_<41> III

Fukaya R., Kunitomo M., Okimoto Y., Ishikawa T., Onda K., Koshihara S., Isayama A., Yui H., Sasagawa T.

Meeting abstracts of the Physical Society of Japan  2012.3  The Physical Society of Japan (JPS)

24pBL-13 Photoinduced dynamics of orbital and magnetic ordered MnV_2O_4 and their impurity effects

Takubo K., Hufuhashi A., Ishikawa T., Onishi Y., Nogami A., Katsufuji T.

Meeting abstracts of the Physical Society of Japan  2012.3  The Physical Society of Japan (JPS)

The Static Optical Spectroscopy and Dynamics of Photoinduced Phase Transition in \nthe (DMEDO-EBDT)2PF6 Single Crystal

T. Ishikawa, M. Kitayama, A. Chono, K. Onda, Y. Okimoto, S. Koshihara, Y. Nakano, H. Yamochi, T. Morikawa, T. Shirahata, Y. Misaki

International Conference on Science and Technology of Synthetic Metals 2012 (ICSM 2012), Atlanta, Georgia, USA., July 8-13, 2012  2012 

19aHB-12 Femtosecond Pump-probe Spectroscopy in Ca_2Fe_<2-x>Al_xO_5

Seki S., Okimoto Y., Fukaya R., Ishikawa T., Onda K., Koshihara S., Taniguchi H., Itoh M.

Meeting Abstracts of the Physical Society of Japan  2012  The Physical Society of Japan

24pBL-7 Photoexcited State in La_<1.5>Sr_<0.5>CoO_4 Studied by Femtosecond Pump-probe Reflection and Transmission Spectroscopy II

Egawa T., Itoh M., Isayama A., Sasagawa T., Okimoto Y., Matsubara Y., Yamada Y., Fukaya R., Ishikawa T., Onda K., Koshihara S., Taniguchi H.

Meeting Abstracts of the Physical Society of Japan  2012  The Physical Society of Japan

電荷移動型有機導電体における電子コピーレンズを利用した物性制御

恩田健, 松原圭考, 荻原将, 石川忠彦, 沖本洋一, 腰原伸也, 平松孝章, 中野義明, 矢持秀起, 斎藤軍治

第6 回分子科学討論会，東京大学本郷キャンパス, 2012 年9 月18-21 日  2012 

21pPSB-7 PIPT on organic single crystals using VSFG and PEEM

Fukumoto K., Fukazawa N., Ishikawa T., Koshihara S., Yamamoto H. M., Kato R., Onda K.

Meeting abstracts of the Physical Society of Japan  2011.8  The Physical Society of Japan (JPS)

23pTC-11 Photoinduced carrier dynamics in Sr_<14-x>Ca_xCu_<24>O_<41> II; 100fs time-resolved spectroscopy

Kunitomo M., Fukaya R., Okimoto Y., Ishikawa T., Onda K., Koshihara S., Yui H., Sasagawa T.

Meeting abstracts of the Physical Society of Japan  2011.8  The Physical Society of Japan (JPS)

22aTC-5 Observation and Control of Electronic Coherence of Photoinduced Phase Transition in (EDO-TTF)_2PF_6

Matsubara Y., Ogihara S., Ishikawa T., Okimoto Y., Koshihara S., Shao X. F., Nakano Y., Hiramatsu T., Yamochi H., Saito G., Onda K.

Meeting abstracts of the Physical Society of Japan  2011.8  The Physical Society of Japan (JPS)

22aTC-4 Photoinduced Charge and Structural Fluctuation in TTF-CA Observed by Time-resolved Infrared Vibrational Spectroscopy

Matsubara Y., Okimoto Y., Yoshida T., Ishikawa T., Koshihara S., Onda K.

Meeting abstracts of the Physical Society of Japan  2011.8  The Physical Society of Japan (JPS)

23pGB-5 Photoexcited State in La_<1.5>Sr_<0.5>CoO_4 Studied by Femtosecond Pump-probe Reflection and Transmission Spectroscopy

Egawa T., Okimoto Y., Kurashima M., Fukaya R., Ishikawa T., Onda K., Koshihara S., Isayama A., Sasagawa T.

Meeting abstracts of the Physical Society of Japan  2011.8  The Physical Society of Japan (JPS)

22aTC-8 The dynamics of photoinduced phase transition in Cs[Pd(dmit)_2]_2 II

Tanaka T., Matsubara Y., Fukazawa N., Ishikawa T., Onda K., Okimoto Y., Koshihara S., Tamura M., Kato R.

Meeting abstracts of the Physical Society of Japan  2011.8  The Physical Society of Japan (JPS)

23pGB-4 Observation of photo-induced phase transition by sequential pulse excitations in Pr_<0.5>Ca_<0.5>CoO_3

Seko K., Okimoto Y., Kurashima M., Fukaya R., Egawa T., Ishikawa T., Onda K., Koshihara S., Kyomen T., Itoh M.

Meeting abstracts of the Physical Society of Japan  2011.8  The Physical Society of Japan (JPS)

25aHC-8 Photoinduced Neutral-to-Ionic Transition of TTF-CA as Investigated by Femtosecond Phonon Spectroscopy

Yoshida Tatsushi, Matsubara Yoshitaka, Okimoto Yoichi, Ishikawa Tadahiko, Koshihara Shin-ya, Onda Ken

Meeting abstracts of the Physical Society of Japan  2011.3  The Physical Society of Japan (JPS)

25pHC-11 Time-resolved infrared vibrational spectroscopy for studying photoinduced phenomena in Charge separated phase of Et_2Me_2Sb[Pd(dmit)_2]_2

Fukazawa N., Ishikawa T., Okimoto Y., Koshihara S., Yamamoto T., Tamura M., Kato R., Onda K.

Meeting abstracts of the Physical Society of Japan  2011.3  The Physical Society of Japan (JPS)

27pHB-7 Femtosecond reflection spectroscopy in a layered cobalt oxide La_<1.5>Sr_<0.5>CoO_4

Okimoto Y., Egawa T., Kurashima M., Fukaya R., Ishikawa T., Onda K., Koshihara S., Isayama A., Sasagawa T.

Meeting abstracts of the Physical Society of Japan  2011.3  The Physical Society of Japan (JPS)

25aTA-7 Metal-Insulator Phase Transition in [(EDO-TTF)_<1-x>(MeEDO-TTF)_x]_2PF_6 Studied by Infrared Spectroscopy

Matsubara Y., Fukazawa N., Ishikawa T., Okimoto Y., Koshihara S., Hiramatsu T., Nakano Y., Yamochi H., Tanaka K., Onda K.

Meeting abstracts of the Physical Society of Japan  2011.3  The Physical Society of Japan (JPS)

25pHC-10 Observation of the photoinduced phase transition in (DMEDO-EBDT)_2PF_6.

Ishikawa T., Chono A., Kitayama M., Tanaka K., Onda K., Okimoto Y., Koshihara S., Morikawa T., Shirahata T., Misaki Y.

Meeting abstracts of the Physical Society of Japan  2011.3  The Physical Society of Japan (JPS)

27pHB-8 Ultrafast photoinduced carrier dynamics in Sr_<14-x>Ca_xCu_<24>O_<41>

Fukaya R., Kunitomo M., Okimoto Y., Ishikawa T., Onda K., Koshihara S., Yui H., Sasagawa T.

Meeting abstracts of the Physical Society of Japan  2011.3  The Physical Society of Japan (JPS)

25aHC-9 Terahertz time-domain spectroscopy of the charge transfer complex TTF-CA crystals

Yamaguchi Y., Aizawa T., Okimoto Y., Matsubara Y., Yoshida T., Ishikawa T., Onda K., Koshihara S.

Meeting abstracts of the Physical Society of Japan  2011.3  The Physical Society of Japan (JPS)

電荷移動型有機導電体(EDO-TTF)2PF6 における量子コヒーレンス

恩田健, 松原圭考, 荻原将, 石川忠彦, 沖本洋一, 腰原伸也, 平松孝章, 中野義明, 矢持秀起, 斎藤軍治

第5 回分子科学討論会，札幌コンベンションセンター, 2011 年9 月20-23 日  2011 

23pTC-10 Photoinduced carrier dynamics in Sr_<14-x>Ca_xCu_<24>O_<41> I; 10 fs time-resolved spectroscopy

Fukaya R., Yui H., Sasagawa T., Kunimtomo M., Matsubara Y., Okimoto Y., Ishikawa T., Onda K., Koshihara S., Taniguchi H., Itoh M.

Meeting Abstracts of the Physical Society of Japan  2011  The Physical Society of Japan

Photo-excited state and femtosecond dynamics in a perovskite-type cobalt oxide

OKIMOTO Y., KURASHIMA M., SEKO K., EGAWA T., ONDA K., ISHIKAWA T., KOSHIHARA S., KYOMEN T., ITOH M.

Bulletin of Topical Symposium of the Magnetics Society of Japan  2010.10 

24aRE-5 Photoinduced Phase Transition in [(EDO-TTF)_<1-x>(MeEDO-TTF)_x]_2PF_6 Studied by Time-resolved Vibrational Spectroscopy

Matsubara Y., Fukazawa N., Ishikawa T., Okimoto Y., Koshihara S., Hiramatsu T., Yamochi H., Tanaka K., Onda K.

Meeting abstracts of the Physical Society of Japan  2010.8  The Physical Society of Japan (JPS)

26pRB-6 Spectroscopic study of the metal-insulator phase transition in (DMEDO-EBDT)_2PF_6

Kitayama M., Chono A., Ishikawa T., Onda K., Okimoto Y., Koshihara S., Morikawa T., Shirahata T., Misaki Y.

Meeting abstracts of the Physical Society of Japan  2010.8  The Physical Society of Japan (JPS)

23pRC-1 Excitation intensity dependence of photoinduced phase transition in Pr_<0.5>Ca_<0.5>CoO_3

Kurashima M., Okimoto Y., Seko K., Ishikawa T., Onda K., Koshihara S., Todoroki N., Kyomen T., Itoh M.

Meeting abstracts of the Physical Society of Japan  2010.8  The Physical Society of Japan (JPS)

24aRE-6 The dynamics of photoinduced phase transition in Cs[Pd(dmit)_2]_2

Tanaka T., Matsubara Y., Fukazawa N., Ishikawa T., Onda K., Okimoto Y., Koshihara S., Tamura M., Kato R.

Meeting abstracts of the Physical Society of Japan  2010.8  The Physical Society of Japan (JPS)

21pHQ-7 Ultrafast photoinduced phenomenon in charge ordered β"-(BEDT-TTF) (TCNQ)

Fukazawa Naoto, Ishikawa Tadahiko, Okimoto Yoichi, Koshihara Shin-ya, Onda Ken, Yamamoto Hiroshi M., Kato Reizo

Meeting abstracts of the Physical Society of Japan  2010.3  The Physical Society of Japan (JPS)

23aPS-44 Terahertz time-domain spectroscopy of the charge transfer complex TTF-CA crystals

Aizawa T., Yamaguchi Y., Okimoto Y., Matsubara Y., Yoshida T., Ishikawa T., Onda K., Koshihara S.

Meeting abstracts of the Physical Society of Japan  2010.3  The Physical Society of Japan (JPS)

20aHK-7 Electric structure of SrTiO_3 under ultraviolet illumination

Fujiwara Y., Yamashita N., Mizokawa T., Ishikawa T., Koshihara, Takesada M., Itho M.

Meeting abstracts of the Physical Society of Japan  2010.3  The Physical Society of Japan (JPS)

25aXA-2 Photoinduced phase transition in (EDO-TTF)_2PF_6 by picosecond time-resolved vibrational spectroscopy

Shimizu M., Ishikawa T., Okimoto Y., Koshihara S., Shao X. F., Nakano Y., Yamochi H., Saito G., Onda K.

Meeting abstracts of the Physical Society of Japan  2009.8  The Physical Society of Japan (JPS)

26aXB-1 Electric structure of SrTiO_3 under ultraviolet illumination

Fujiwara Y., Yamashita N., Takaiwa N., Mizokawa T., Ishikawa T., Koshihara, Takesada M., Itho M.

Meeting abstracts of the Physical Society of Japan  2009.8  The Physical Society of Japan (JPS)

25aXA-3 Dynamics of photoinduced phase transition in (EDO-TTF)_2PF_6 on the sub-20 femtosecond time scale

Ogihara S., Ishikawa T., Okimoto Y., Koshihara S., Shao X. F., Nakano Y., Yamochi H., Saito G., Itatani J., Onda K.

Meeting abstracts of the Physical Society of Japan  2009.8  The Physical Society of Japan (JPS)

27aPS-88 Phase transition in (DMEDO-TTF)_2PF_6 studied by optical spectra

Kitayama M., Matsubara Y., Ishikawa T., Onda K., Okimoto Y., Koshihara S., Shirahata T., Kawamoto T., Mori T.

Meeting abstracts of the Physical Society of Japan  2009.8  The Physical Society of Japan (JPS)

25aXA-6 Femto second time resolved transmission spectroscopy in TTF-CA thin film

Matsubara Y., Yoshida T., Ishikawa T., Onda K., Okimoto Y., Koshihara S.

Meeting abstracts of the Physical Society of Japan  2009.8  The Physical Society of Japan (JPS)

28aVA-3 Femtosecond reflection spectroscopy in RBaCo_2O_<6-δ> 3

Miyata T., Okimoto Y., Endo M. S., Kurashima M., Tanaka S., Onda K., Ishikawa T., Koshihara S., Arima T.

Meeting abstracts of the Physical Society of Japan  2009.3  The Physical Society of Japan (JPS)

26aXB-7 Femtosecond reflection spectroscopy in NdMnO_3

Tanaka S, Kuwahara H, Miyata T, Okimoto Y, Kurashima M, Ishikawa T, Onda K, Koshihara S, Akaki M, Akahoshi D

Meeting Abstracts of the Physical Society of Japan  2009  The Physical Society of Japan

20pYG-9 Photoinduced phase transition in Pr_<1/2>Ca_<1/2>CoO_3 II : picosecond dynamics

Okimoto Y., Peng X., Tamura M., Onda K., Morita T., IshikawaA T., Koshihara S., Todoroki N., Kyomen T., Itoh M.

Meeting abstracts of the Physical Society of Japan  2008.8  The Physical Society of Japan (JPS)

21pYD-9 Excitation light's wave length dependency in photo induced phase transition of Et_2Me_2Sb[Pd(dmit)_2]_2 salts

Fukazawa N., Ishikawa T., Matsubara Y., Kitayama M., Koshihara S., Okimoto Y., Onda K., Tamura M., Kato R.

Meeting abstracts of the Physical Society of Japan  2008.8  The Physical Society of Japan (JPS)

21pYD-7 Doubled pulse excitation of photo-induced phase transition in (EDO-TTF)_2PF_6

Ogihara S., Onda K., Ishikawa T., Okimoto Y., Shao X. F., Nakano Y., Yamochi H., Saito G., Koshihara S.

Meeting abstracts of the Physical Society of Japan  2008.8  The Physical Society of Japan (JPS)

20pYG-8 Photoinduced phase transition in Pr_<1/2>Ca_<1/2>CoO_3 I : femtosecond dynamics

Okimoto Y., Peng X., Tamura M., Onda K., Morita T., Ishikawa T., Koshihara S., Todoroki N., Kyomen T., Itoh M.

Meeting abstracts of the Physical Society of Japan  2008.8  The Physical Society of Japan (JPS)

紫外光励起下のSrTiO₃の光電子分光 III

高岩徳寿, 田久保耕, 溝川貴司, 石川忠彦, 腰原伸也, 武貞正樹, 伊藤満

日本物理学会講演概要集  2008.2 

26aPS-39 Photoemission study of SrTiO_3 under ultraviolet light excitation III

Takaiwa N., Takubo K., Mizokawa T., Ishikawa T., Koshihara S., Takesada M., Ito M.

Meeting abstracts of the Physical Society of Japan  2008.2  The Physical Society of Japan (JPS)

24aYH-7 Temperature dependence of the dynamics of photo-induced phase transition in the charge-separated phase of the Pd(dmit)_2 complex

Ishikawa T., Fukazawa N., Nakajima R., Matsubara Y., Okimoto Y., Onda K., Koshihara S., Lorenc Maciej, Moisan Nicolas, Servol Marina, Collet Eric, Tamura M., Kato R.

Meeting abstracts of the Physical Society of Japan  2008.2  The Physical Society of Japan (JPS)

23pYH-4 Femtosecond reflection spectroscopy in RBaCo_2O_<6-δ>2

Endo M. S., Miyata T., Okimoto Y., Onda K., Ishikawa T., Koshihara S., Arima T.

Meeting abstracts of the Physical Society of Japan  2008.2  The Physical Society of Japan (JPS)

23pYH-3 Femtosecond time-resolved reflection spectroscopy in Pr_<1-x>Ca_xMnO_3(x=0.37)

Peng X., Okimoto Y., Endo S., Sato K., Aizawa T., Onda K., Ishikawa T., Koshihara S., Arima T.

Meeting abstracts of the Physical Society of Japan  2008.2  The Physical Society of Japan (JPS)

22aTK-2Probing photo-induced phase transition in Dimer-Mott insulator phase of Et_2Me_2Sb[Pd(dmit)_2]_2 salts

Fukazawa N., Matsubara Y., Nakajima R., Ishikawa T., Onda K., Okimoto Y., Koshihara S., Tamura M., Kato R.

Meeting abstracts of the Physical Society of Japan  2007.8  The Physical Society of Japan (JPS)

22pTQ-9 Femtosecond reflection spectroscopy in GdBaCo_2O_<6-δ>

Endo M., Okimoto Y., Onda K., Ishikawa T., Koshihara S., Arima T.

Meeting abstracts of the Physical Society of Japan  2007.8  The Physical Society of Japan (JPS)

22aTK-10 High photon density excitation of the photo-induced phase transition in (EDO-TTF)_2PF_6 and controlling it.

Ogihara S., Onda K., Ishikawa T., Okimoto Y., Shao X., Yamochi H., Saito G., Koshihara S.

Meeting abstracts of the Physical Society of Japan  2007.8  The Physical Society of Japan (JPS)

20pZB-6 Excitation wavelength dependence of the photo-induced phase transition in (EDO-T TF)_2PF_6

Ogihara S., Onda K., Ishikawa T., Okimoto Y., Shao X., Yamochi H., Saito G., Koshihara S.

Meeting abstracts of the Physical Society of Japan  2007.2  The Physical Society of Japan (JPS)

20aZB-9 Photoemission study of SrTiO_3 under ultraviolet light excitation II

Iida T., Takubo K., Son J.-Y., Mizokawa T., Ishikawa T., Koshihara S., Takesada M., Ito M.

Meeting abstracts of the Physical Society of Japan  2007.2  The Physical Society of Japan (JPS)

20pZB-14 Probing photo induced phase transition in charge-separated phase of Pd(dmit)_2 salts II

Fukazawa N., Nakajima R., Mii K., Ishikawa T., Onda K., Okimoto Y., Koshihara S., Tamura M., Kato R.

Meeting abstracts of the Physical Society of Japan  2007.2  The Physical Society of Japan (JPS)

19pPSA-24 Femtosecond reflection spectroscopy in Pr_<1/2>Ca_<1/2>CoO_3

Tamura M, Nozawa S, Ichiyanagi K, Tomita A, Guerin Laurent, Chollet Matthieu, Adachi S, Koshihara S, Okimoto Y, Onda K, Morita T, Ishikawa T, Todoroki N, Kyomen T, Itoh M, Sato T

Meeting Abstracts of the Physical Society of Japan  2007  一般社団法人 日本物理学会

25aPS-55 Photoemission study of SrTiO_3 under ultraviolet light excitation

Iida T., Son J.-Y., Takubo K., Mizokawa T., Ishikawa T., Koshihara S., Takesada M., Ito M.

Meeting abstracts of the Physical Society of Japan  2006.8  The Physical Society of Japan (JPS)

23pQE-11 Probing photo induced phase transition in charge-separated phase of [Pd(dmit)_2] salts

Nakajima R., Mii K., Ishikawa T., Onda K., Okimoto Y., Koshihara S., Tamura M., Kato R.

Meeting abstracts of the Physical Society of Japan  2006.8  The Physical Society of Japan (JPS)

27aRE-5 Reflectivity change in the mid-infrared region on the ultrafast photoinduced phase transition of (EDO-TTF)_2PF_6

Onda K., Ogihara S., Ishikawa T., Chollet Matthieu, Shao Xiangfeng, Yamochi H., Saito G., Koshiahra S.

Meeting abstracts of the Physical Society of Japan  2006.3  The Physical Society of Japan (JPS)

27aYA-7 Photoconductivity change due to phase control in quantum paraelectric SrTiO_3 II

Ishikawa Tadahiko, Seki Takashi, Kurita Masaaki, Koshihara Shin-ya, Takesada Masaki, Itoh Mitsuru

Meeting abstracts of the Physical Society of Japan  2006.3  The Physical Society of Japan (JPS)

時間分解赤外分光法による電荷移動型錯体の超高速光誘起相転移の研究

恩田健, 荻原将, 石川忠彦, 沖本洋一, X. Shao, 矢持秀起, 斉藤軍治, 腰原伸也

分子構造総合討論会，グランシップ(静岡県コンベンションアーツセンター), 2006 年9 月 20-23 日  2006 

22aYD-12 Photoconductivity change due to phase control in quantum paraelectric SrTiO_3

Ishikawa T., Seki T., Kurita M., Koshihara S., Takesada M., Itoh M.

Meeting abstracts of the Physical Society of Japan  2005.8  The Physical Society of Japan (JPS)

20aYD-4 Ultrafast infrared spectroscopy of the photo-induce phase transition in (EDO-TTF)_2PF_6

Onda K., Ishikawa T., Chollet Matthieu, Guerin Laurent, Shao Xiangfeng, Yamochi H., Saito G., Koshiahra S.

Meeting abstracts of the Physical Society of Japan  2005.8  The Physical Society of Japan (JPS)

27pXQ-4Raman scattering on (EDO-TTF)_2PF_6.

Hasegawa T., Iio K., Kawai A., Chollet M., Ishikawa T., Koshihara S., Ota A., Yamochi H., Saito G.

Meeting abstracts of the Physical Society of Japan  2005.3  The Physical Society of Japan (JPS)

25aYR-11 The photoinduced effect of Hexagonal BaTiO_3

Kurita M., Ishikawa T., Koshihara S., Fu D., Itoh M., Yu J.

Meeting abstracts of the Physical Society of Japan  2005.3  The Physical Society of Japan (JPS)

24pWF-9 Metal-insulator transition in Pr_<1-x>Ca_xCoO_3 probed by optical-spectrum

Morita T., Ishikawa T., Koshihara S., Tsubouchi S., Todoroki N., Kyoumen T., Itoh M.

Meeting abstracts of the Physical Society of Japan  2005.3  The Physical Society of Japan (JPS)

27pXQ-3 The relaxation dynamics of photocurrent in 1/4-filled (EDO-TTF)_2PF_6

Mii K., Fukaya S., Ishikawa T., Koshihara S., Ota A., Shao X., Yamochi H., Saito G., Matsuda K.

Meeting abstracts of the Physical Society of Japan  2005.3  The Physical Society of Japan (JPS)

有機伝導体(EDO-TTF)2PF6 における光誘起絶縁体-金属相転移の超高速赤外分光

恩田健, 石川忠彦, Matthieu Chollet, Laurent Guerin, Xianfeng Shao, 矢持秀起, 斉藤軍治, 腰原伸也

分子構造総合討論会，タワーホール船堀(江戸川区総合区民ホール), 2005 年9 月27-30 日  2005 

12aXA-1 The characteristics of the photoinduced carriers in quantum paraelectric SrTiO_3

Kurita M., Sakano Y., Ishikawa T., Koshihara S., Takesada M., Itoh M.

Meeting abstracts of the Physical Society of Japan  2004.8  The Physical Society of Japan (JPS)

14aXA-4 The characteristic and the power dependence of photo-excitation in (EDO-TTF)_2PF_6

Fukaya S., Shimoda H., Ishikawa T., Koshihara S., Ota A., Yamochi H., Saito G., Matsuda K.

Meeting abstracts of the Physical Society of Japan  2004.8  The Physical Society of Japan (JPS)

14aXA-5 The photo-induced effect in charge ordering type insulator (EDO-TTF)_2AsF_6

Shimoda H., Fukaya S., Ishikawa T., Koshihara S., Ota A., Yamochi H., Saito G., Matsuda K.

Meeting abstracts of the Physical Society of Japan  2004.8  The Physical Society of Japan (JPS)

28pXK-2 Action spectrum of photoconductivity in the quantum paraelectric SrTiO_3

Sakano Y., Ishikawa T., Kurita M., Shimoda H., Koshihara S., Takesada M., Itoh M.

Meeting abstracts of the Physical Society of Japan  2004.3  The Physical Society of Japan (JPS)

28pXF-5 The dynamic characteristic of the photo-induced metallic phase in (EDO-TTF)_2PF_6

Fukaya S., Shimoda H., Ishikawa T., Uchida N., Koshihara S., Ota A., Yamochi H., Saito G.

Meeting abstracts of the Physical Society of Japan  2004.3  The Physical Society of Japan (JPS)

30aPS-48 Photo-induced phase transition in (EDO-TTF)_2PF_6

Matthieu Chollet, Uchida Naoki, Fukaya Souichi, Guerin Laurent, Matsuda Kazunari, Ishikawa Tadahiko, Koshihara Shin-ya, Ota Akira, Yamochi Hideki, Saito Gunzi

Meeting abstracts of the Physical Society of Japan  2004.3  The Physical Society of Japan (JPS)

30aPS-8 Photoemission study of SrTiO_3 under light illumination

Shibata A., Takubo K., Hirata S., Quilty James, Son J.Y., Mizokawa T., Ishikawa T., Koshihara S., Takesada M., Ito M.

Meeting abstracts of the Physical Society of Japan  2004.3  The Physical Society of Japan (JPS)

28pXK-7 Photo effect of perovskite quantum paraelectrics under dc electric field

Takesada M., Taniguchi H., Itoh M., Koshihara S., Ishikawa T., Yagi T.

Meeting Abstracts of the Physical Society of Japan  2004  The Physical Society of Japan

Dynamics of the photo-excitation process in (EDO-TTF)_2PF_6

Uchida N., Ota A., Fukaya S., CHOLLET Matthie, Ishikawa T., Koshihara S., Yamochi H., Saito G.

Meeting abstracts of the Physical Society of Japan  2003.8  The Physical Society of Japan (JPS)

Annealing effect on the photoconductivity in quantum paraelectric SrTiO_3

Kurita M., Shimoda S., Sakano Y., Ishikawa T., Koshihara S., Takesada M., Itoh M.

Meeting abstracts of the Physical Society of Japan  2003.8  The Physical Society of Japan (JPS)

Giant photoconductivity effect in the quantum paraelectric SrTiO_3

Ishikawa T., Kurita M., Shimoda H., Sakano Y., Koshihara S., Takesada M., Itoh M.

Meeting abstracts of the Physical Society of Japan  2003.8  The Physical Society of Japan (JPS)

Properties of the photo-excited carrier in the quantum paraelectric SrTiO_3 I

Ishikawa T., Kurita M., Shimoda H., Satoh K., Sakano Y., Koshihara S., Takesada M., Itoh M.

Meeting abstracts of the Physical Society of Japan  2003.3  The Physical Society of Japan (JPS)

Properties of the photo-excited carrier in the quantum paraelectric SrTiO_3 II

Kurita M., Shimoda S., Satoh K., Sakano Y., Ishikawa T., Koshihara S., Takesada M., Itoh M.

Meeting abstracts of the Physical Society of Japan  2003.3  The Physical Society of Japan (JPS)

Photo-excitation effect in metal insulator transition of (EDO-TTF)_2PF_6

Uchida N., Ota A., Fukaya S., Ishikawa T., Koshihara S., Yamochi H., Saito G.

Meeting abstracts of the Physical Society of Japan  2003.3  The Physical Society of Japan (JPS)

Carrier density dependence of the MCD spectra

Komori T., Ishikawa T., Kuroda T., Minami F., Yoshino J., Koshihara S.

Meeting abstracts of the Physical Society of Japan  2002.8  The Physical Society of Japan (JPS)

Electric field dependence on photo-induced absorption in strontium titanate

Matthieu NICOUL, Matthieu CHOLLET

Meeting abstracts of the Physical Society of Japan  2002.8  The Physical Society of Japan (JPS)

26pPSB-2 Observation of magnetic domains in (Ga,Mn)As thin films by micro-SQUID magnetometer

Kosh i hara S., Komor iKomori T., Sugimoto A., Ishikawa T., Tanigawa Y., Yoshino J., Iguchi I.

Meeting abstracts of the Physical Society of Japan  2002.3  The Physical Society of Japan (JPS)

24aYD-12 Dynamics of the photo-excitation process in the Peierls transition systems.

Ishikawa T., Uchida N., Tashiro M., Koshihara S.

Meeting abstracts of the Physical Society of Japan  2002.3  The Physical Society of Japan (JPS)

Measurement of transient circular dichroism induced by photoexcitation in (Ga,Mn)As

Toyonori M., Ishikawa T., Ogawa Y., Komori T., Koshihara S., Yoshino J., Minami F.

Meeting abstracts of the Physical Society of Japan  2001.9  The Physical Society of Japan (JPS)

Magnetic field and crystal size dependence of the photo-induced spin-state transition dynamics in spin erossover complex

Ogawa Y., Ishikawa T., Koshihara S., Boukheddaden K., Varret F.

Meeting abstracts of the Physical Society of Japan  2001.9  The Physical Society of Japan (JPS)

Measurement of dielectric constant in MMX-chain complexes

Ishikawa T., Koshihara S., Kobayashi A., Kitagawa H., Ikeda R.

Meeting abstracts of the Physical Society of Japan  2001.9  The Physical Society of Japan (JPS)

Light irradiation effect on the magnetization in (Ga,Mn)As

Komori T., Ishikawa T., Kuroda T., Koshihara S., Yoshino J., Minami F.

Meeting abstracts of the Physical Society of Japan  2001.9  The Physical Society of Japan (JPS)

Spin State Transitions in iron Spin-Crossover complex observed with XES and XAS

Osawa H., Iwazumi T., Syoji H., Ogawa Y., Ishikawa T., Koshihara S., Katano R., Isozumi Y., Nanao S.

Meeting abstracts of the Physical Society of Japan  2001.3  The Physical Society of Japan (JPS)

Spin State Transitions in iron Spin-Crossover complex observed with XES and XAS 2

Osawa H., Isozumi Y., Nanao S., Iwazumi T., Syoji H., Hirai E., Nakamura T., Ogawa Y., Ishikawa T., Koshihara S., Katano R.

Meeting Abstracts of the Physical Society of Japan  2001  The Physical Society of Japan

Coexistence of Large Pseudogap and Drude Response in Nd_<2-x>Ce_xCuO_4

Onose Y., Taguchi Y., Ishizaka K., Ishikawa T., Tokura Y.

Meeting abstracts of the Physical Society of Japan  2000.9  The Physical Society of Japan (JPS)

Magnetic field dependence of the photo-induced spin-state transition process in spin crossover complex

Ogawa Y., Ishikawa T., Koshihara S.

Meeting abstracts of the Physical Society of Japan  2000.9  The Physical Society of Japan (JPS)

Dynamical study of the photo-induced Neutral-Ionic phase transition by SOR and femtosecond Neutral-Ionic phase transition by SOR

Meeting abstracts of the Physical Society of Japan  2000.9  The Physical Society of Japan (JPS)

The effect of the excitation by the circularly polarized light on the MCD spectrum for (Ga,Mn)As

Komori T., Ishikawa T., Kuroda T., Koshihara S., Yoshino J., Minami F.

Meeting abstracts of the Physical Society of Japan  2000.9  The Physical Society of Japan (JPS)

Carrier density dependence of mid-infrared absorption spectra in III-V group magnetic semiconductor (Ga,Mn)As

Ishikawa T., Komori T., Koshihara S., Kuroda T., Minami F., Yoshino J.

Meeting abstracts of the Physical Society of Japan  2000.3  The Physical Society of Japan (JPS)

Carrier density dependence of MCD spectrum in (Ga,Mn)As II

Komori T., Ishikawa T., Kuroda T., Koishihara S., Yoshino J., Minami F., Akinaga H.

Meeting abstracts of the Physical Society of Japan  2000.3  The Physical Society of Japan (JPS)

The magnetic field dependence of the dynamical process in photo-induced spin-state transition

Ogawa Y., Ishikawa T., Koshihara S.

Meeting abstracts of the Physical Society of Japan  2000.3  The Physical Society of Japan (JPS)

24aYC-4 Dynamical Study of Photoinduced N-I Transition by Time-resolved SHG Observation

Sakai H, Matsubara M, Takesada M, Ishikawa T, Koshihara s, Tokura Y

Meeting abstracts of the Physical Society of Japan  1999.9  The Physical Society of Japan (JPS)

24aC-5 Carrier Density Dependence of MCD spectra in (Ga, Mn)As

Komori T, Kuroda T, Ishikawa T, Koshihara S, Yoshino J, Minami F, Akinaga H

Meeting abstracts of the Physical Society of Japan  1999.9  The Physical Society of Japan (JPS)

26pYT-5 Optical spectroscopy of La_<2-2x>Sr_<1+2x>Mn_2O_7 in magnetic field II

Tobe K, Okimoto Y, Ishikawa T, Kimura T, Tokura Y

Meeting abstracts of the Physical Society of Japan  1999.9  The Physical Society of Japan (JPS)

24aYC-3 Dynamics of the photo-induced phase transition in the organic Fe complex;Fe(bpy)_2(NCS)_2

Fujishiro T, Ogawa Y, Ishikawa T, Koshihara S, Kumai R, Tokura Y

Meeting abstracts of the Physical Society of Japan  1999.9  The Physical Society of Japan (JPS)

31a-L-8 Optical Spectra in Nd_<2-x>Ce_xCuO<4+δ> crystal : Possibility of Charge Ordering

Onose Y., Ishizaka K., Taguchi Y., Ishikawa T., Tokura Y.

Meeting abstracts of the Physical Society of Japan  1999.3  The Physical Society of Japan (JPS)

28p-C-1 Optical spectroscopy of La_<2-2x>Sr_<1+2x>Mn_2O_7 in magnetic fleld

Tobe K., Okimoto Y., Ishikawa T, Kimura T, Tokura Y

Meeting abstracts of the Physical Society of Japan  1999.3  The Physical Society of Japan (JPS)

29a-C-7 Observation of dynamics of breakdown and restoration processes of charge and orbital ordering in La_<0.5>Sr_<1.5>MnO_4 by pump-probe spectroscopy.

Kise T., Ogasawara T., Ishikawa T., Tokura Y., Kuwata-Gonokami M.

Meeting abstracts of the Physical Society of Japan  1999.3  The Physical Society of Japan (JPS)

Optical spectra upon charge ordering transition in R_<1/3>Sr_<2/3>FeO_3(R=La,Pr,Nd,Sm,Gd)

PARK S.K, ISHIKAWA T., TOKURA Y.

Meeting abstracts of the Physical Society of Japan  1998.9  The Physical Society of Japan (JPS)

Change/Orbital ordering transition in LaSr_2Mn_2O_7 crystal

ISHIKAWA T., KIMURA T., TOBE K., TOKURA Y.

Meeting abstracts of the Physical Society of Japan  1998.9  The Physical Society of Japan (JPS)

Anisotropy of the electronic structure in La_<1/2>Sr_<3/2>MnO4 crystal due to the orbital ordering transition

ISHIKAWA T., OHKURA K., TOKURA Y.

Meeting abstracts of the Physical Society of Japan  1998.3  The Physical Society of Japan (JPS)

Change Dynamics in Nd_<2-x>Ce_xCuO_4 as-grown Crystal

ONOSE Y., TAGUCHI Y., ISHIKAWA T., TOKURA Y.

Meeting abstracts of the Physical Society of Japan  1998.3  The Physical Society of Japan (JPS)

6p-W-7 Doping dependence of optical spectra in layered perovskite type manganites

Ishikawa T., Kimura T., Tokura Y.

Meeting abstracts of the Physical Society of Japan  1997.9  The Physical Society of Japan (JPS)

31p-K-10 Temperature dependence of optical spectra for Nd_<2-x>Ce_xCuO_4(x〜0.15)

Taguchi Y, Ishikawa T, Tokura Y

Meeting abstracts of the Physical Society of Japan  1997.3  The Physical Society of Japan (JPS)