Details of the Researcher

PHOTO

Yusuke Hashimoto
Section
Frontier Research Institute for Interdisciplinary Sciences
Job title
Specially Appointed Associate Professor(Research)
Degree
Profile
大学院修士課程からNHK技研でのポストドクターまで一貫して、ポンプアンドプローブ法を用いた超高速時間分解磁気光学分光によるスピン緩和ダイナミクスに関する研究を行った。ラドバウド大学（オランダ）のTheo Rasing 研究室に移り、ポンプアンドプローブ法に磁気光学イメージング法を組み合わせた、時間分解磁気光学イメージング法を独自に開発した。本測定手法により、フェリ磁性金属における全光磁化反転およびフェリ磁性絶縁体におけるスピン波伝搬過程の時空間分解イメージングに成功した。その後、東北大学齊藤研究室にて、観測されたスピン波伝搬過程を、フーリエ変換と畳み込み積分に基づく理論モデルで解析するスピン波トモグラフィー法を確立し、静磁波（長波長領域のスピン波）分散関係の観測に世界で初めて成功した。現在は、観測されたスピン波の励起メカニズムに関する研究を行なっている。
Researcher ID: L-7530-2014

Research History 9

  • 2024/01 - Present
    Tohoku University　Frontier Research Institute for Interdisciplinary Sciences　Project Associate Professor

  • 2021/03 - 2023/12
    Tohoku University　Organization for Research Promotion Tohoku Forum for Creativity　Specially Appointed Associate Professor/URA Data Manager

  • 2015/04 - 2020/03
    Tohoku University

  • 2011/10 - 2015/03
    ラドバウド大学ナイメーヘン　ポストドクター研究員

  • 2008/10 - 2011/09
    NHK Science & Technology Research Laboratories

  • 2006/04 - 2008/09
    Tokyo Institute of Technology　Science of Engineering

  • 2005/04 - 2006/03
    Chiba University　Venture Business Laboratory

  • 2004/04 - 2005/03
    双葉電子工業記念財団奨学生

  • 2003/10 - 2004/03
    Ministry of Education,Culture,Sports,Science and Technology

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Professional Memberships 1

  • American Physics Society

Research Interests 11

  • Magneto-optical imaging

  • Time-resolves magneto-optical imaging

  • Spin-wave Tomography

  • Spin wave

  • Labview

  • Igor Pro

  • 磁性体

  • 化合物半導体

  • 固体物性

  • 光学実験

  • 磁気光学効果

Research Areas 2

  • Nanotechnology/Materials / Crystal engineering /

  • Nanotechnology/Materials / Applied materials /

Awards 1

  1. 第24回（2008年春季）応用物理学会 講演奨励賞

    2008/03　応用物理学会

Papers 32

  1. Fe-Doped MnO2 Catalysts for Li-O2 Batteries: Mechanistic Insights into Durability Enhancement via Operando XAFS Peer-reviewed

    Yoshikiyo Hatakeyama, Haruka Naito, Seii Yamamoto, Ryoshi Oda, Kazuyuki Hino, Yusuke Hashimoto, Soshi Shiraishi

    ACS APPLIED ENERGY MATERIALS　9　(1)　251-260　2026/01/12

    DOI： 10.1021/acsaem.5c03033 　

    ISSN： 2574-0962

  2. A materials map integrating experimental and computational data via graph-based machine learning for enhanced materials discovery

    Y. Hashimoto, X. Jia, H. Li, T. Tomai

    APL Machine Learning　2025/09/01

    DOI： 10.1063/5.0274812 　

    ISSN： 2770-9019

    More details Close

    <jats:p>Materials informatics (MI), emerging from the fusion of materials science and data science, has the potential to greatly accelerate material development and discovery. Although MI relies on data from both computational and experimental studies, their integration remains challenging. In our previous study, we addressed this challenge by training a machine learning model on experimental data and applying it to compositional entries in a computational database, thereby creating a unified dataset. In this study, we use these integrated datasets to construct material maps that visualize the relationships between material properties and structural features. The goal is to provide experimental researchers with a practical tool for exploring structurally similar compounds and thus their associated routes. We generate the materials map using the MatDeepLearn (MDL) framework, which represents crystal structures as graphs and employs deep learning for property prediction. Statistical analyses reveal that the MDL equipped with a message passing neural network (MPNN) architecture efficiently captures features related to the structural complexity of materials. Interestingly, this representational advantage does not always lead to higher accuracy in property prediction. We attribute this finding to the strong learning capacity of MPNN, which contributes primarily to the organization of data points within the materials map rather than to incremental gains in predictive precision.</jats:p>

  3. Benchmarking pH-field coupled microkinetic modeling against oxygen reduction in large-scale Fe-azaphthalocyanine catalysts Peer-reviewed

    Di Zhang, Yutaro Hirai, Koki Nakamura, Koju Ito, Yasutaka Matsuo, Kosuke Ishibashi, Yusuke Hashimoto, Hiroshi Yabu, Hao Li

    CHEMICAL SCIENCE　15　(14)　2024/04/03

    DOI： 10.1039/d4sc00473f 　

    ISSN： 2041-6520

    eISSN： 2041-6539

  4. Dealing with the big data challenges in AI for thermoelectric materials Peer-reviewed

    Xue Jia, Alex Aziz, Yusuke Hashimoto, Hao Li

    Science China Materials　67　(4)　1173-1182　2024/03/08

    DOI： 10.1007/s40843-023-2777-2 　

    ISSN： 2095-8226

    eISSN： 2199-4501

  5. Identifying Stable Electrocatalysts Initialized by Data Mining: Sb<inf>2</inf>WO<inf>6</inf> for Oxygen Reduction Peer-reviewed

    Xue Jia, Zixun Yu, Fangzhou Liu, Heng Liu, Di Zhang, Egon Campos dos Santos, Hao Zheng, Yusuke Hashimoto, Yuan Chen, Li Wei, Hao Li

    Advanced Science　2023

    DOI： 10.1002/advs.202305630 　

    eISSN： 2198-3844

  6. A dynamic database of solid-state electrolyte (DDSE) picturing all-solid-state batteries Peer-reviewed

    Fangling Yang, Egon Campos dos Santos, Xue Jia, Ryuhei Sato, Kazuaki Kisu, Yusuke Hashimoto, Shin ichi Orimo, Hao Li

    Nano Materials Science　6　(2)　256-262　2023

    DOI： 10.1016/j.nanoms.2023.08.002 　

    ISSN： 2096-6482

    eISSN： 2589-9651

  7. Composition-tunable magnon-polaron anomalies in spin Seebeck effects in epitaxial BixY3−xFe5O12 films Peer-reviewed

    Takashi Kikkawa, Koichi Oyanagi, Tomosato Hioki, Masahiko Ishida, Zhiyong Qiu, Rafael Ramos, Yusuke Hashimoto, Eiji Saitoh

    Physical Review Materials　6　(10)　104402　2022/10/06

    DOI： 10.1103/PhysRevMaterials.6.104402 　

  8. Tracking Structural Changes of Carbon Nanotube Electrodes for Lithium-Air Batteries by Time-Resolved Operando Wide- and Small- Angle X-ray Scattering Peer-reviewed

    Yoshikiyo Hatakeyama, Mana Sugimoto, Akifumi Suga, Haruka Naito, Shuntaro Sugimoto, Iori Sakaguchi, Yusuke Hashimoto, Soshi Shiraishi

    JOURNAL OF PHYSICAL CHEMISTRY C　126　(36)　15094-15103　2022/09

    DOI： 10.1021/acs.jpcc.2c04213 　

    ISSN： 1932-7447

    eISSN： 1932-7455

  9. Coherent oscillation between phonons and magnons Peer-reviewed

    Tomosato Hioki, Yusuke Hashimoto, Eiji Saitoh

    COMMUNICATIONS PHYSICS　5　(1)　2022/05

    DOI： 10.1038/s42005-022-00888-1 　

    ISSN： 2399-3650

  10. Bi-reflection of spin waves Peer-reviewed

    Tomosato Hioki, Yusuke Hashimoto, Eiji Saitoh

    COMMUNICATIONS PHYSICS　3　(1)　2020/10

    DOI： 10.1038/s42005-020-00455-6 　

    ISSN： 2399-3650

  11. Unique phase behavior of a room-temperature ionic liquid, trimethylpropylammonium bis(fluorosulfonyl)amide: surface melting and its crystallization Peer-reviewed

    Keiko Nishikawa, Kozo Fujii, Yusuke Hashimoto, Ken-ichi Tozaki

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS　22　(36)　20634-20642　2020/09

    DOI： 10.1039/d0cp03073b 　

    ISSN： 1463-9076

    eISSN： 1463-9084

  12. Snell's law for spin waves at a 90 degrees magnetic domain wall Peer-reviewed

    Tomosato Hioki, Rei Tsuboi, Tom H. Johansen, Yusuke Hashimoto, Eiji Saitoh

    APPLIED PHYSICS LETTERS　116　(11)　2020/03

    DOI： 10.1063/1.5141864 　

    ISSN： 0003-6951

    eISSN： 1077-3118

  13. Room temperature and low-field resonant enhancement of spin Seebeck effect in partially compensated magnets Peer-reviewed

    Ramos, R., Hioki, T., Hashimoto, Y., Kikkawa, T., Frey, P., Kreil, A. J. E., Vasyuchka, V. I., Serga, A. A., Hillebrands, B., Saitoh, E.

    NATURE COMMUNICATIONS　10　2019/11

    DOI： 10.1038/s41467-019-13121-5 　

    ISSN： 2041-1723

  14. Time-Resolved Imaging of Magnetoelastic Waves by the Cotton-Mouton Effect Peer-reviewed

    Hioki Tomosato, Hashimoto Yusuke, Johansen Tom H, Saitoh Eiji

    PHYSICAL REVIEW APPLIED　11　(6)　2019/06/28

    DOI： 10.1103/PhysRevApplied.11.061007 　

    ISSN： 2331-7019

  15. 180°-phase shift of magnetoelastic waves observed by phase-resolved spin-wave tomography Peer-reviewed

    Yusuke Hashimoto, Tom H. Johansen, Eiji Saitoh

    Applied Physics Letters　112　(23)　2018/06/04

    DOI： 10.1063/1.5030342 　

    ISSN： 0003-6951

  16. Frequency and wavenumber selective excitation of spin waves through coherent energy transfer from elastic waves Peer-reviewed

    Yusuke Hashimoto, Davide Bossini, Tom H. Johansen, Eiji Saitoh, Andrei Kirilyuk, Theo Rasing

    Physical Review B　97　(14)　2018/04/27

    DOI： 10.1103/PhysRevB.97.140404 　

    ISSN： 2469-9969 2469-9950

  17. Phase-resolved spin-wave tomography Peer-reviewed

    Yusuke Hashimoto, Tom H. Johansen, Eiji Saitoh

    Applied Physics Letters　112　(7)　2018/02/12

    DOI： 10.1063/1.5018091 　

    ISSN： 0003-6951

  18. All-optical observation and reconstruction of spin wave dispersion Peer-reviewed

    Yusuke Hashimoto, Shunsuke Daimon, Ryo Iguchi, Yasuyuki Oikawa, Ka Shen, Koji Sato, Davide Bossini, Yutaka Tabuchi, Takuya Satoh, Burkard Hillebrands, Gerrit E. W. Bauer, Tom H. Johansen, Andrei Kirilyuk, Theo Rasing, Eiji Saitoh

    NATURE COMMUNICATIONS　8　2017/06

    DOI： 10.1038/ncomms15859 　

    ISSN： 2041-1723

  19. Electronic structure near the Fermi level in the ferromagnetic semiconductor GaMnAs studied by ultrafast time-resolved light-induced reflectivity measurements Peer-reviewed

    Tomoaki Ishii, Tadashi Kawazoe, Yusuke Hashimoto, Hiroshi Terada, Iriya Muneta, Motoichi Ohtsu, Masaaki Tanaka, Shinobu Ohya

    PHYSICAL REVIEW B　93　(24)　2016/06

    DOI： 10.1103/PhysRevB.93.241303 　

    ISSN： 2469-9950

    eISSN： 2469-9969

  20. Macrospin dynamics in antiferromagnets triggered by sub-20 femtosecond injection of nanomagnons Peer-reviewed

    D. Bossini, S. Dal Conte, Y. Hashimoto, A. Secchi, R. V. Pisarev, Th. Rasing, G. Cerullo, A. V. Kimel

    NATURE COMMUNICATIONS　7　2016/02

    DOI： 10.1038/ncomms10645 　

    ISSN： 2041-1723

  21. Ultrafast time-resolved magneto-optical imaging of all-optical switching in GdFeCo with femtosecond time-resolution and a mu m spatial-resolution Peer-reviewed

    Y. Hashimoto, A. R. Khorsand, M. Savoini, B. Koene, D. Bossini, A. Tsukamoto, A. Itoh, Y. Ohtsuka, K. Aoshima, A. V. Kimel, A. Kirilyuk, Th Rasing

    REVIEW OF SCIENTIFIC INSTRUMENTS　85　(6)　2014/06

    DOI： 10.1063/1.4880015 　

    ISSN： 0034-6748

    eISSN： 1089-7623

  22. Spin transfer switching of current-perpendicular-to-plane giant magnetoresistance with various Gd-Fe free-layer compositions Peer-reviewed

    K. Aoshima, Y. Hashimoto, N. Funabashi, K. Machida, K. Kuga, H. Kikuchi, N. Shimidzu, T. Ishibashi

    JOURNAL OF APPLIED PHYSICS　111　(7)　2012/04

    DOI： 10.1063/1.3676237 　

    ISSN： 0021-8979

    eISSN： 1089-7550

  23. Spin transfer switching of current-perpendicular-to-plane giant magnetoresistance devices with Gd-Fe free layers and Ag-spacer materials for light modulator applications Peer-reviewed

    K. Aoshima, Y. Ohtsuka, Y. Hashimoto, N. Funabashi, K. Machida, K. Kuga, H. Kikuchi, N. Shimidzu

    JOURNAL OF APPLIED PHYSICS　109　(7)　2011/04

    DOI： 10.1063/1.3560882 　

    ISSN： 0021-8979

  24. Two pulse control of magnetization precession in ferrimagnetic GdFe films under low-power excitation Peer-reviewed

    Kazuhiro Nishibayashi, Yusuke Hashimoto, Kiyoshi Kuga, Hiro Munekata

    2011 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)　2011

    ISSN： 2160-9020

  25. Mapping a magnetization switching field in Ga0.98Mn0.02As microbars with a scanning laser magneto-optical microscope Peer-reviewed

    J. Aoyama, Y. Hashimoto, S. Kobayashi, H. Munekata

    JOURNAL OF APPLIED PHYSICS　105　(7)　2009/04

    DOI： 10.1063/1.3065964 　

    ISSN： 0021-8979

  26. Investigation of an effective anisotropy field involved in photoinduced precession of magnetization in (Ga,Mn)As Peer-reviewed

    S. Kobayashi, Y. Hashimoto, H. Munekata

    JOURNAL OF APPLIED PHYSICS　105　(7)　2009/04

    DOI： 10.1063/1.3073848 　

    ISSN： 0021-8979

  27. Coherent manipulation of magnetization precession in ferromagnetic semiconductor (Ga,Mn)As with successive optical pumping Peer-reviewed

    Y. Hashimoto, H. Munekata

    APPLIED PHYSICS LETTERS　93　(20)　202506　2008/11

    DOI： 10.1063/1.3030988 　

    ISSN： 0003-6951

  28. Photoinduced precession of magnetization in ferromagnetic (Ga,Mn)As Peer-reviewed

    Y. Hashimoto, S. Kobayashi, H. Munekata

    PHYSICAL REVIEW LETTERS　100　(6)　067202　2008/02

    DOI： 10.1103/PhysRevLett.100.067202 　

    ISSN： 0031-9007

  29. Anisotropic decay dynamics of photoexcited aligned carbon nanotube bundles Peer-reviewed

    Y. Hashimoto, Y. Murakami, S. Maruyama, J. Kono

    PHYSICAL REVIEW B　75　(24)　245408　2007/06

    DOI： 10.1103/PhysRevB.75.245408 　

    ISSN： 1098-0121

  30. Ultrafast magneto-optics in ferromagnetic III-V semiconductors Peer-reviewed

    Jigang Wang, Chanjuan Sun, Yusuke Hashimoto, Junichiro Kono, Giti A. Khodaparast, Lukasz Cywinski, L. J. Sham, Gary D. Sanders, Christopher J. Stanton, Hiro Munekata

    JOURNAL OF PHYSICS-CONDENSED MATTER　18　(31)　R501-R530　2006/08

    DOI： 10.1088/0953-8984/18/31/R01 　

    ISSN： 0953-8984

    eISSN： 1361-648X

  31. Propagating coherent acoustic phonon wave packets in InxMn1-xAs/GaSb Peer-reviewed

    J Wang, Y Hashimoto, J Kono, A Oiwa, H Munekata, GD Sanders, CJ Stanton

    PHYSICAL REVIEW B　72　(15)　153311　2005/10

    DOI： 10.1103/PhysRevB.72.153311 　

    ISSN： 1098-0121

  32. Photo-induced Faraday rotation in GaAs/AlGaAs multiple quantum wells Peer-reviewed

    T Kuroda, Y Hashimoto, F Minami

    JOURNAL OF LUMINESCENCE　94　551-554　2001/12

    DOI： 10.1016/S0022-2313(01)00384-2 　

    ISSN： 0022-2313

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Misc. 9

  1. スピン波を観る : 静磁波の分散関係を測定 (特集 光で迫る物質の新しい世界)

    橋本 佑介

    光アライアンス　29　(11)　16-19　2018/11

    Publisher: 日本工業出版

    ISSN： 0917-026X

  2. Mode-conversion of magneto-elastic waves via the edge reflection

    Hioki Tomosato, Hashimoto Yusuke, Saitoh Eiji

    Meeting Abstracts of the Physical Society of Japan　73　(0)　1053-1053　2018

    Publisher: 一般社団法人 日本物理学会

  3. Imaging of propagation dynamics of optically-excited spin waves in a garnet film

    橋本 佑介, 齊藤 英治

    社団法人日本磁気学会研究会資料 = Bulletin of Topical Symposium of the Magnetics Society of Japan　210　23-27　2016/11/18

    Publisher: 日本磁気学会

    ISSN： 1882-2940

  4. Excitation and coherent control of antiferromagnetic spin waves with sub-20-fs optical pulses

    D. Bossini, S. Dal Conte, Y. Hashimoto, A. Secchi, R. V. Pisarev, Th Rasing, G. Cerullo, A. V. Kimel

    Optics InfoBase Conference Papers　2016/07/18

    DOI： 10.1364/UP.2016.UTh3A.5 　

  5. アモルファスフェリ磁性体GdFeでの光誘起歳差運動観測による磁気特性評価

    橋本佑介, 宗片比呂夫, 青島賢一, 久我淳, 清水直樹

    応用物理学関係連合講演会講演予稿集(CD-ROM)　57th　2010

  6. 超高速時間分解磁気光学分光法を用いたスピン注入磁化反転電流の推定

    橋本佑介, 青島賢一, 船橋信彦, 久我淳, 清水直樹, 宗片比呂夫

    応用物理学会学術講演会講演予稿集　70th　(2)　2009

  7. 19pYF-7 Polarization and Carrier Relaxation Dynamics in Vertically-Aligned Single Walled Carbon Nanotubes

    Hashimoto Y., Murakami Y., Maruyama S., Kono J.

    Meeting abstracts of the Physical Society of Japan　60　(2)　684-684　2005/08/19

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  8. Ultrafast optical processes in carbon nanotubes

    G. N. Ostojic, S. Zaric, Y. Hashimoto, J. Shaver, J. Kono

    Optics InfoBase Conference Papers　2005/01/01

  9. Long-lived dilute photocarriers in individually-suspended single-walled carbon nanotubes

    Y. Hashimoto, A. Srivastava, J. Shaver, G. N. Ostojic, S. Zaric, V. C. Moore, R. H. Hauge, R. E. Smalley, J. Kono

    OSA Trends in Optics and Photonics Series　97　1279-1280　2004/01/01

    ISSN： 1094-5695

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Presentations 36

  1. A New Gateway to Materials Science Opened by AI and Robotics Invited

    Yusuke Hashimoto

    2025/11/10

  2. Local and Global Mapping of Thermoelectric Materials Based on Computational and Experimental Datasets

    Yusuke Hashimoto

    2025/03/24

  3. スピン波トモグラフィーで観るマグノンフォノン相互作用 Invited

    橋本佑介, 齊藤英治

    第38回光機能性デバイス・材料専門研究会兼第９回光・熱・磁気の相互作用を利用した新規スピンデバイス・ストレージ技術調査専門委員会　2019/01/28

  4. Spin-Wave Tomography International-presentation Invited

    Yusuke Hashimoto

    COLLECTIVE SPIN DYNAMICS IN NANOSTRUCTURES　2018/10/01

  5. Observation of spin wave dispersions with ultrashort pulsed light Invited

    Yusuke Hashimoto

    2018/01/04

  6. Spin Wave Tomography International-presentation Invited

    Yusuke Hashimoto

    Tohoku/York/Kaiserslautern 6th JSPS Core-to-Core Workshop on "New-Concept Spintronics Devices"　2017/12/15

  7. 光でみるスピン波分散関係 Invited

    橋本佑介

    応用物理学会秋季学術講演会シンポジウム　2017/09/06

  8. Spin Wave Tomography Invited

    Yusuke Hashimoto

    2017/09/04

  9. Spin Wave Tomography International-presentation

    Yusuke Hashimoto

    Magnonics 2017　2017/08/07

  10. Spin Wave Tomography Invited

    Yusuke Hashimoto

    2017/06/02

  11. Ultrafast Time-resolved Imaging of Propagation Dynamics of Optically-excited Spin Waves International-presentation Invited

    Yusuke Hashimoto

    International workshop on novel photo induced phenomena and applications　2016/11/11

  12. Ultrafast time-resolved magneto-optical imaging of spin waves in in-plane magnetized garnet film Invited

    Y. Hashimoto, A. V. Kimel, A. Kiriluk, Th. Rasing

    LASOR Seminar at Tokyo University　2014/10/14

  13. Propagation dynamics of optically-excited spin-waves in a garnet film visualized by new ultrafast time-resolved magneto-optical microscope International-presentation Invited

    Yusuke Hashimoto, Andrei Kirilyuk, Theo Rasing

    The 22th Symposium of MSJ Optical Functional Magnetic Devices and Materials　2014/10/10

  14. ULTRAFAST TIME-RESOLVED MAGNETO-OPTICAL IMAGING MICROSCOPY

    Y. Hashimoto, B. Koene, A. V. Kimel, A. Kiriluk, Th. Rasing

    Physics and Applications of Spin-related Phenomena in Semiconductors (PASPS-18)　2013/12/03

  15. ULTRAFAST TIME-RESOLVED MAGNETO-OPTICAL IMAGING OF SPIN WAVES IN IN-PLANE MAGNETIZED BI-DOPED IRON GARNET International-presentation

    Y. Hashimoto, B. Koene, A. V. Kimel, A. Kiriluk, Th. Rasing

    Magnetics and Optics Research International Symposium (MORIS2013)　2013/12/02

  16. New Ultrafast Time-resolved Magneto-optical Imaging System International-presentation

    Y. Hashimoto, A. R. Khorsand, M. Savoini, B. Koene, D. Bossini, A. Tsukamoto, A. Itoh, Y. Ohtsuka, K. Aoshima, A. V. Kimel, A. Kirilyuk, Th. Rasing

    Gordon research conference, HongKong　2013/08/18

  17. Two pulse control of magnetization precession in ferrimagnetic GdFe films under low-power excitation International-presentation

    K. Nishibayashi, K. Suda, K. Kuga, Y. Hashimoto, H. Munekata

    Conference on lasers and electro optics　2012/05/01

  18. Experimental investigation of controlling light polarization in optical waveguides with magneto-optical materials GdFe International-presentation

    K. Nishibayashi, L. Ampan, K. Suda, H. Munekata, H. Yoneda, Y. Hashimoto, K. Kuga

    Magnetics and Optics Research International Symposium　2011/06/21

  19. 光ポンプアンドプローブ法を用いた磁化歳差運動の緩和過程に関する研究とその応用 Invited

    橋本 佑介, 青島 賢一, 船橋 信彦, 久我 淳, 清水 直樹, 宗片 比呂夫

    日本磁気学会 第４１回ナノマグネティクス専門研究会　2011/06/03

  20. Spin Transfer Switching of CPP-GMR Devices with Gd-Fe Free Layers and Ag Spacer Materials for Light Modulator Applications International-presentation

    K. Aoshima, Y. Ohtsuka, Y. Hashimoto, N. Funabashi, K. Machida, K. Kuga, H. Kikuchi, N. Shimidzu

    55th Annual Conference on Magnetism and Magnetic Materials　2010/11/03

  21. Photo-induced precession of magnetization in ferromagnetic semiconductor (Ga,Mn)As Invited

    Yusuke Hashimoto

    The 64th JPS Spring Meeting　2009/03/27

  22. Mapping a magnetization switching field in Ga0.98Mn0.02As wires with a scanning laser magneto-optical microscope International-presentation

    J. Aoyama, Y. Hashimoto, S. Kobayashi, H. Munekata

    53rd Annual Conference on Magnetism and Magnetic Materials, Austin, Texas, November 10-14, 2008, CE-07　2008/11/10

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    p. 153

  23. Investigation of an effective magnetic field involved in photoinduced precession of magnetization in (Ga,Mn)As International-presentation

    S. Kobayashi, Y. Hashimoto, H. Munekata

    53rd Annual Conference on Magnetism and Magnetic Materials　2008/11/10

  24. Rasing the Curie Temperature of (Ga,Mn)As through Annealing by Arsenic Ion Beams within MBE Chamber

    T. Kuo, Y. Hashimoto, S. Kobayashi, H. Munekata

    SUMMER NANOTECHNOLOGY STUDY PROGRAM IN JAPAN　2008/08

  25. All optical FMR of ferromagnetic (Ga,Mn)As with various Mn contents International-presentation

    S. Kobayashi, Y. Hashimoto, H. Munekata

    Annual American Physical Society March Meeting 2008　2008/05

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    p. 544

  26. Ultrafast Spin-dynamics in Ferromagnetic Semiconductor GaMnAs International-presentation

    Y. Hashimoto, S. Kobayashi, H. Munekata

    The 34th International Symposium on Compound Semiconductors　2007/10/15

  27. Anisotropic Decay Dynamics of Photoexcited Aligned Carbon Nanotube Bundles International-presentation

    Y. Hashimoto, Y. Murakami, S. Maruyama, J. Kono

    2nd Workshop on Nanotube Optics and Nanospectroscopy Wonton'07　2007/06/04

  28. Photo-induced precession of magnetization in ferromagnetic GaMnAs International-presentation

    Y. Hashimoto, H. Munekata

    Annual American Physical Society March Meeting 2007　2007/03/05

  29. Ultrafast Carrier dynamics in Single-Walled Carbon Nanotubes Invited

    Yusuke Hashimoto

    BROWN BAG SEMINAR　2004/08/27

  30. Long-Lived Dilute Photocarriers in Individually-suspended Single-Walled Carbon Nanotubes International-presentation

    Y. Hashimoto, A. Srivastava, J. Shaver, J. Kono, V. C. Moore, R. H. Hauge, R. E. Smalley

    RQI　2004/08/05

  31. Photo-induced ferromagnetism in bulk-Cd0.95Mn0.05Te via exciton magnetic polarons 27th International Conference on the Physics of Semiconductors International-presentation

    Y. Hashimoto, H. Mino, T. Yamamuro, D. Kanbara, T. Matsusue, S. Takeyama, G. Karczewski, T. Wojtowicz, J. Kossut

    27th International Conference on the Physics of Semiconductors　2004/07/26

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    Free exciton magnetic polarons in bulk CdMnTe with low Mn concentration have been investigated through the time-resolved and spectral-resolved photo-induced Faraday rotation measurements. The time-resolved photo-induced Faraday rotation measurements have revealed the spin relaxation dynamics and show a finite rotation angle lasting longer than 13 ns. This previously unreported long decay is attributed to dark exciton magnetic polarons.

  32. Long-Lived Dilute Photocarriers in Individually-suspended Single-Walled Carbon Nanotubes International-presentation

    Y. Hashimoto, A. Srivastava, J. Shaver, G. N. Ostojic, S. Zaric, V. C. Moore, R. H. Hauge, R. E. Smalley, J. Kono

    Conference on lasers and electro optics/ international quantum electronics conference　2004/05/16

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    We have observed slow (> 1 ns) carrier decays in single-walled carbon nanotubes. This previously-unreported signal appears in a dilute limit and is accompanied by polarization memory, which persists as long as the photocarriers exist.

  33. Photo-induced Faraday rotation in GaAs / AlGaAs multiple quantum wells International-presentation

    Yusuke Hashimoto, Tomofumi Yamamuro, Taizou Kanbara, Toshio Matsusue, Shojiro Takeyama

    Annual APS March Meeting 2004　2004/03/22

  34. Spin Related Dynamics of Intrinsic Exciton Magnetic Polarons in bulk-Cd1-xMnxTe in Magnetic Field International-presentation

    Yusuke Hashimoto, T Kamohara, D Kanbara, T Yamamuro, H Mino, T Matsusue, S Takeyama

    7th International Symposium on Research in High Magnetic Fields　2003/07/20

  35. Biexcitonic Faraday rotation in GaAs / AlGaAs multiple quantum wells International-presentation

    Yusuke Hashimoto, Takashi Kuroda, Fujio Minami

    26th International Conference on the Physics of Semiconductors　2002/07/29

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    The polarization rotation introduced by the resonant pulse excitation is investigated in nonmagnetic GaAs quantum wells. The Faraday rotation signal is resolved both in spectral and temporal domain, showing a clear excitonic and biexcitonic resonance profile. The Faraday rotation spectra are well reproduced by a calculation based on the multiple transition model, in which the two-exciton complex of singlet and triplet geometry are taken into account. The resonance energies of the two-exciton states, extracted through the present fitting, are consistent with results of spin-dependent nonlinear absorption.

  36. Photo-induced Faraday rotation in GaAs / AlGaAs multiple quantum wells International-presentation

    Takashi Kuroda, Yusuke Hashimoto, Fujio Minami

    The International Conference on Dynamical Processes in Excited State of Solids　2001/07/01

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Industrial Property Rights 12

  1. 磁気光学測定方法および磁気光学測定装置

    橋本 佑介, 齊藤 英治

    Property Type: Patent

  2. 磁気光学スペクトル分光装置、磁気光学スペクトル測定方法およびプログラム

    橋本 佑介, 青島 賢一, 町田 賢司, 船橋 信彦, 久我 淳, 菊池 宏, 清水 直樹

    Property Type: Patent

  3. 磁気光学スペクトル分光装置、磁気光学スペクトル測定方法およびプログラム

    橋本 佑介, 青島 賢一, 町田 賢司, 船橋 信彦, 久我 淳, 菊池 宏, 清水 直樹

    特許第5469590号

    Property Type: Patent

  4. 光変調素子および空間光変調器

    青島 賢一, 久我 淳, 橋本 佑介, 船橋 信彦, 町田 賢司, 菊池 宏, 清水 直樹

    Property Type: Patent

  5. 光変調素子および空間光変調器

    青島 賢一, 久我 淳, 橋本 佑介, 船橋 信彦, 町田 賢司, 菊池 宏, 清水 直樹

    特許第5667417号

    Property Type: Patent

  6. 磁気光学特性測定装置および磁気光学特性測定方法

    橋本 佑介, 清水 直樹, 山添 昇吾, 笠松 直史

    Property Type: Patent

  7. 磁気光学特性測定装置及び磁気光学特性の測定方法

    橋本 佑介, 青島 賢一, 町田 賢司, 船橋 信彦, 久我 淳, 清水 直樹

    特許第5297299号

    Property Type: Patent

  8. 磁気特性測定装置および磁気特性測定方法

    橋本 佑介, 青島 賢一, 町田 賢司, 船橋 信彦, 久我 淳, 清水 直樹

    Property Type: Patent

  9. 磁気光学特性測定装置及び磁気光学特性の測定方法

    橋本 佑介, 青島 賢一, 町田 賢司, 船橋 信彦, 久我 淳, 清水 直樹

    Property Type: Patent

  10. 磁気特性測定装置および磁気特性測定方法

    橋本 佑介, 青島 賢一, 町田 賢司, 船橋 信彦, 久我 淳, 清水 直樹

    特許第5427509号

    Property Type: Patent

  11. 磁気光学スペクトル測定装置及び磁気光学スペクトルの測定方法

    橋本 佑介, 青島 賢一, 町田 賢司, 船橋 信彦, 久我 淳, 清水 直樹

    特許第5261284号

    Property Type: Patent

  12. 磁気光学スペクトル測定装置及び磁気光学スペクトルの測定方法

    橋本 佑介, 青島 賢一, 町田 賢司, 船橋 信彦, 久我 淳, 清水 直樹

    Property Type: Patent

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Other 3

  1. http://www.wpi-aimr.tohoku.ac.jp/jp/news/press/2017/20170613_000977.html

  2. More details Close

    News about the new time-resolved magneto-optical imaging system reported in Review of Scientific instruments in the homepage of College of Science and Technology in Nihon University, Oct. 30, 2014 http://www.cst.nihon-u.ac.jp/news/2014/10/30001104.html

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    News about the new time-resolved magneto-optical imaging system reported in Review of Scientific instruments in the homepage of the Magnetics Society of Japan, Oct. 3, 2014 http://www.magnetics.jp/tech-info/inf_index/inf_spin/115-01/