Microscopic theory of current-spin interaction in ferromagnets, and its extension to thermal phenomena

• Project/Area Number: 21540336
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: Osaka University
• Principal Investigator: KOHNO Hiroshi 大阪大学, 大学院・基礎工学研究科, 准教授 (10234709)
• Project Period (FY): 2009 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000); Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
• Keywords: スピントロニクス / 電流による磁化ダイナミクス / スピントルク / スピン起電力 / スピン緩和 / ギルバート減衰 / ゲージ場 / 熱現象 / スピン流 / スピン移行トルク / 温度勾配 / 線形応答理論 / スピン軌道相互作用 / 磁壁移動 / 熱輸送 / ゲージ不変性 / 第一原理計算 / Gilbert damping

Research Abstract

A ferromagnetic moment can be manipulated byapplying an electric current directly to a ferromagnet. Conversely, an electric current can be induced by the dynamics of magnetization. We have formulated a microscopic theory which describes such interplay between the magnetization and electric current in a ferromagnet. The theory is extended to study the manipulation which utilizes the relativistic effects (spin-orbit coupling) or temperature gradient.

Research Products

• [Journal Article] Spin torques due to diffusive spin current in magnetic texture (2013)
  • Author(s): K. Hosono, J. Shibata, H. Kohnoand Y. Nozaki
  • Journal Title: Phys. Rev. B Volume: 87 Pages: 0944041-8
  • Peer Reviewed
• [Journal Article] Ultraviolet divergence and Ward-Takahashi identity in a two-dimensional Dirac electron system with short-range impurities (2013)
  • Author(s): J. Fujimoto, A. Sakai and H. Kohno
  • Journal Title: Phys. Rev. B Volume: 87 Pages: 0854371-5
  • Peer Reviewed
• [Journal Article] Current-induced magnetic domain wall motion below intrinsic threshold triggered by Walker breakdown (2012)
  • Author(s): T. Koyama, K. Ueda, K.-J. Kim, Y. Yoshimura, D. Chiba, K. Yamada, J.-P. Jametc, A. Mougin, A. Thiaville, S. Mizukami, S. Fukami, N. Ishiwata, Y. Nakatani, H. Kohno, K. Kobayashi and T. Ono
  • Journal Title: Nature Nanotechnology Volume: 7 Pages: 635-639
  • Peer Reviewed
• [Journal Article] Calculation of nonlocal spin transfer torque (2012)
  • Author(s): K. Hosono, J. Shibata, H. Kohnoand Y. Nozaki
  • Journal Title: IEEE Transactions on Magnetics Volume: 48 Pages: 4367-4370
  • Peer Reviewed
• [Journal Article] Spinmotive force due to a gyrating magnetic vortex (2012)
  • Author(s): K. Tanabe, D. Chiba, J. Ohe, S. Kasai, H. Kohno, S. E. Barnes, S. Maekawa, K. Kobayashi, T. Ono
  • Journal Title: Nature communications Volume: 3 Issue: 1 Pages: 845-845
  • DOI: 10.1038/ncomms1824
  • Peer Reviewed
• [Journal Article] Ultraviolet divergence and Ward-Takahashi identity in a two-dimensional Dirac electron system with short-range impurities (2012)
  • Author(s): Junji Fujimoto
  • Journal Title: Phys. Rev. B Volume: 87 Issue: 8 Pages: 0854371-5
  • DOI: 10.1103/physrevb.87.085437
  • Peer Reviewed
• [Journal Article] Spin torques due to diffusive spin current in magnetic texture (2012)
  • Author(s): Kazuhiro Hosono
  • Journal Title: Phys. Rev. B Volume: 87 Issue: 9 Pages: 0944041-8
  • DOI: 10.1103/physrevb.87.094404
  • Peer Reviewed
• [Journal Article] Spin and charge transport induced by gauge fields in a ferromagnet (2011)
  • Author(s): J. Shibata and H. Kohno
  • Journal Title: Phys. Rev. B Volume: 84 Pages: 1844081-12
  • Peer Reviewed
• [Journal Article] A brief review of field- and current-driven domain wall motion (2011)
  • Author(s): J. Shibata, G. Tatara and H. Kohno
  • Journal Title: J. Phys. D: Appl. Phys. Volume: 44 Pages: 3840041-18
  • Peer Reviewed
• [Journal Article] Magnetic vortex wall motion driven by spin waves (2011)
  • Author(s): S.-M. Seo, H.-W. Lee, H. Kohno, and K.-J. Lee
  • Journal Title: Applied Physics Letters Volume: 98 Pages: 0125141-3
  • Peer Reviewed
• [Journal Article] A brief review of field- and current-driven domain wall motion (2011)
  • Author(s): 柴田絢也, 他
  • Journal Title: Journal of Physics D : Applied Physics Volume: 44 Pages: 3840041-18
  • Peer Reviewed
• [Journal Article] Spin and charge transport driven by gauge fields in a ferromagnet (2011)
  • Author(s): 柴田絢也, 他
  • Journal Title: Physical Review B Volume: 84 Pages: 1844081-12
  • Peer Reviewed
• [Journal Article] Spin Hall Current and Spin-transfer Torque in Ferromagnetic Metal (2010)
  • Author(s): J. Shibata and H. Kohno
  • Journal Title: Journal of Physics: Conference Series Volume: 200 Pages: 0620261-4
  • Peer Reviewed
• [Journal Article] Spin Hall Current and Spin-transfer Torque in Ferromagnetic Metal (2010)
  • Author(s): 柴田絢也, 他
  • Journal Title: Journal of Physics : Conference Series 200 Pages: 0620261-4
  • Peer Reviewed
• [Journal Article] Geometry-dependent scaling of critical current densities for current-induced domain wall motion and transformations (2009)
  • Author(s): L. Heyne, J. Rhensius, Y.-J. Cho, D. Bedau, S. Krzyk, C. Dette, H. S. Korner, J. Fischer, M. Laufenberg, D. Backes, L. J. Heyderman, L. Joly, F. Nolting, G. Tatara, H.Kohno, S. Seo, U. Rudiger, and M. Klaeui
  • Journal Title: Physical Review B Volume: 80 Pages: 1844051-4
  • Peer Reviewed
• [Journal Article] Inverse Spin Hall Effect Driven by Spin Motive Force (2009)
  • Author(s): J. Shibata and H. Kohno
  • Journal Title: Physical Review Letters Volume: 102 Pages: 0866031-4
  • Peer Reviewed
• [Journal Article] Inverse Spin Hall Effect Driven by Spin Motive Force (2009)
  • Author(s): 柴田絢也, 他
  • Journal Title: Physical Review Letters 102 Pages: 0866031-4
  • Peer Reviewed
• [Journal Article] Geometry-dependent scaling of critical current densities for current-induced domain wall motion and transformations (2009)
  • Author(s): L.Heyne, 他
  • Journal Title: Physical Review B 80 Pages: 1844051-4
  • Peer Reviewed
• [Journal Article] (2009)
  • Author(s): 河野浩, 他
  • Journal Title: Nanomagnetism and Spintronics(Elsevier) Pages: 189-229
• [Journal Article] (2009)
  • Author(s): 河野浩, 他
  • Journal Title: Proceedings of the 9^<th> International Symposium on Foundations of Quantum Mechanics in the Light of New Technology(World Scientific) Pages: 111-117
• [Journal Article] Two-barrier stability that allows low power operation in current-induced domain wall motion
  • Author(s): K.-J. Kim, R. Hiramatsu, T. Koyama, K. Ueda, Y. Yoshimura, D. Chiba, K. Kobayashi, Y. Nakatani, S. Fukami, M. Yamanouchi, H. Ohno, H. Kohno, G. Tatara and T. Ono
  • Journal Title: Nature Communications Volume: (accepted)
  • Peer Reviewed
• [Presentation] スピントルク及びスピン起電力の微小振幅の方法による微視的解析 - ラシュバ型スピン軌道相互作用を伴う系 - (2013)
  • Author(s): 酒井章雄,河野 浩
  • Organizer: 日本物理学会
  • Place of Presentation: 広島大学
• [Presentation] ディラック強磁性体の秩序変数:自己無撞着方程式による解析 (2013)
  • Author(s): 藤本純治,河野 浩
  • Organizer: 日本物理学会
  • Place of Presentation: 広島大学
• [Presentation] Spin torques and charge transport on the surface of topological insulator (2013)
  • Author(s): A. Sakai and H. Kohno
  • Organizer: QS^2C Theory Forum International Symposium on "Strongly Correlated Quantum Science"
  • Place of Presentation: Univ. of Tokyo, Japan
• [Presentation] 2次元ディラック電子系の紫外発散と不純物効果 (2012)
  • Author(s): 藤本純治,酒井章雄,○河野 浩
  • Organizer: 日本物理学会
  • Place of Presentation: 関西学院大学
  • Year and Date: 2012-03-26
• [Presentation] ディラック強磁性体の輸送係数II (2012)
  • Author(s): 藤本純治,河野 浩
  • Organizer: 日本物理学会
  • Place of Presentation: 横浜国立大学
• [Presentation] Spin torques and charge transport on the surface of topological insulator (2012)
  • Author(s): A. Sakai and H. Kohno
  • Organizer: The 7th International Conference on Physics and Applications of Spin-related Phenomena in Semiconductor (PASPS-VII)
  • Place of Presentation: Eindhoven, The Netherlands
• [Presentation] Transport properties of Dirac Ferromagnet (2012)
  • Author(s): J. Fujimoto and H. Kohno
  • Organizer: The 7th International Conference on Physics and Applications of Spin-related Phenomena in Semiconductor (PASPS-VII)
  • Place of Presentation: Eindhoven, The Netherlands
• [Presentation] Microscopic Calculation of Thermal Spin Torques (2012)
  • Author(s): 河野 浩
  • Organizer: Spin Caloritronics 4
  • Place of Presentation: Sendai
• [Presentation] Microscopic theory of current-spin interaction in ferromagnets with Rashba-type spin-orbit coupling (2012)
  • Author(s): 河野 浩
  • Organizer: International Symposium on the Dynamics of Domain Walls
  • Place of Presentation: Hamburg, Germany
• [Presentation] Spin torques and charge transport on the surface of topological insulator (2012)
  • Author(s): A. Sakai and H. Kohno
  • Organizer: International conference on topological phenomena, E&S Building, Nagoya University
  • Place of Presentation: Nagoya, Japan
• [Presentation] トポロジカル絶縁体の表面電子系によるスピントルクの計算II (2012)
  • Author(s): 酒井章雄,河野 浩
  • Organizer: 日本物理学会
  • Place of Presentation: 関西学院大学
• [Presentation] ディラック強磁性体の輸送係数 (2012)
  • Author(s): 藤本純治,河野 浩
  • Organizer: 日本物理学会
  • Place of Presentation: 関西学院大学
• [Presentation] Microscopic Study of Spin Motive Force (2012)
  • Author(s): 河野 浩
  • Organizer: The 2nd ASRC International Workshop on Magnetic Materials and Nanostructures
  • Place of Presentation: Tokai, Japan
• [Presentation] Spin torques due to topological surface state (2012)
  • Author(s): A. Sakai and H. Kohno
  • Organizer: The 2nd ASRC International Workshop on Magnetic Materials and Nanostructures
  • Place of Presentation: Tokai, Japan
• [Presentation] Microscopic Study of Spin Motive Force (2012)
  • Author(s): Hiroshi Kohno
  • Organizer: The 2nd ASRC International Workshop on Magnetic Materials and Nanostructures
  • Place of Presentation: 原研 東海村
  • Invited
• [Presentation] Microscopic theory of current-spin interaction in ferromagnets with Rashba-type spin-orbit coupling (2012)
  • Author(s): Hiroshi Kohno
  • Organizer: International Symposium on the Dynamics of Domain Walls
  • Place of Presentation: Hamburg大学
  • Invited
• [Presentation] Microscopic Calculation of Thermal Spin Torques (2012)
  • Author(s): Hiroshi Kohno
  • Organizer: Spin Caloritronics 4
  • Place of Presentation: 東北大学 金属材料研究所
  • Invited
• [Presentation] 電流-スピン相互作用の微視的理論 (2011)
  • Author(s): 河野 浩
  • Organizer: 日本物理学会
  • Place of Presentation: 富山大学
  • Year and Date: 2011-09-21
• [Presentation] トポロジカル絶縁体の表面電子系によるスピントルクの計算 (2011)
  • Author(s): 酒井章雄,河野 浩
  • Organizer: 日本物理学会
  • Place of Presentation: 富山大学
• [Presentation] Calculation of spin torques due to helical electrons (2011)
  • Author(s): A. Sakai and H. Kohno
  • Organizer: 6th international School and Conference on Spintronics and Quantum Information Technology
  • Place of Presentation: Matsue, Japan
• [Presentation] Calculation of spin torque for a system with spin-orbit interaction (2011)
  • Author(s): A. Sakai and H. Kohno
  • Organizer: 5thInternational Workshop on Spin Currents
  • Place of Presentation: Sendai, Japan
• [Presentation] スピン軌道相互作用の強い系におけるスピントルクの計算 (2011)
  • Author(s): 酒井章雄,河野 浩
  • Organizer: 日本物理学会
  • Place of Presentation: 新潟大学
• [Presentation] トポロジカル絶縁体によるスピントルク (2011)
  • Author(s): 酒井章雄,河野 浩
  • Organizer: 新学術領域 対称性の破れた凝縮系におけるトポロジカル現象 第2回領域研究会
  • Place of Presentation: 岡山大学
• [Presentation] Diagrammatic Methods in Spintronics: Spin Torque and Spin Motive Force (2010)
  • Author(s): 河野 浩
  • Organizer: KITP-C Program on "Progress in Spintronics and Graphene Research"
  • Place of Presentation: 北京(中国)
  • Year and Date: 2010-05-19
• [Presentation] Diagrammatic Methods in Spintronics : Spin Torque and Spin Motive Force (2010)
  • Author(s): 河野浩
  • Organizer: KITP-C Program on "Progress in Spintronics and Graphene Research"
  • Place of Presentation: 北京(中国)(招待講演)
  • Year and Date: 2010-05-19
• [Presentation] スピン起電力の微視的理論 -ゲージ場の方法- II (2010)
  • Author(s): 柴田絢也,河野 浩
  • Organizer: 日本物理学会
  • Place of Presentation: 岡山大学
  • Year and Date: 2010-03-21
• [Presentation] スピン起電力の微視的理論 -ゲージ場の方法-II (2010)
  • Author(s): 柴田絢也
  • Organizer: 日本物理学会 第65回年次大会
  • Place of Presentation: 岡山大学津島キャンパス
  • Year and Date: 2010-03-21
• [Presentation] Microscopic Calculation of SpiMotive Force - Spin relaxation and gauge invariance (2010)
  • Author(s): 河野 浩
  • Organizer: 4th International workshop on Spin Currents and 2nd International workshop on Spin Caloritronics
  • Place of Presentation: 東北大学 金属材料研究所
  • Year and Date: 2010-02-08
• [Presentation] Microscopic Calculation of Spin Motive Force-Spin relaxation and gauge invariance- (2010)
  • Author(s): 河野浩
  • Organizer: 4th International workshop on Spin Currents and 2nd International workshop on Spin Caloritronics
  • Place of Presentation: 東北大学 金属材料研究所
  • Year and Date: 2010-02-08
• [Presentation] Introduction to CMagnetization Dynamics (2010)
  • Author(s): 河野 浩
  • Organizer: The 2nd International Conference on AdvancedMicro-Device Engineering: AMDE 2010
  • Place of Presentation: 群馬県桐生市
• [Presentation] Microscopic Theory of Current-Spin Interaction in Conducting Ferromagnets (2010)
  • Author(s): 河野 浩
  • Organizer: Handai Global COE & ICNDR
  • Place of Presentation: 大阪大学
• [Presentation] Introduction to Current-Driven Magnetization Dynamics (2010)
  • Author(s): 河野浩
  • Organizer: The 2nd International Conference on Advanced Micro-Device Engineering : AMDE 2010
  • Place of Presentation: 群馬県桐生市(招待講演)
• [Presentation] Microscopic Theory of Current-Spin Interaction in Ferromagnets (2009)
  • Author(s): 河野 浩
  • Organizer: International workshop, "Spin-Up 2009"
  • Place of Presentation: Longyearbyen, Norway
  • Year and Date: 2009-06-01
• [Presentation] 電流-スピン相互作用の微視的理論
  • Author(s): 河野 浩
  • Organizer: 日本物理学会
  • Place of Presentation: 富山大学
  • Invited
• [Presentation] ２次元ディラック電子系の紫外発散と不純物効果
  • Author(s): 河野 浩
  • Organizer: 日本物理学会
  • Place of Presentation: 関西学院大学
• [Book] Nanomagnetism and Spintronics (2009)
  • Author(s): 河野 浩,多々良源
  • Publisher: Elsevier
• [Book] Proceedings of the 9th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology (2009)
  • Author(s): 河野 浩,川端 優,野口 毅,上田昇平,柴田絢也,多々良源
  • Publisher: World Scientific
• [Patent(Industrial Property Rights)] 特許 (2011)
  • Inventor(s): 小野輝男, 他
  • Industrial Property Rights Holder: 京都大学, 他
  • Filing Date: 2011-05-31
  • Overseas