Microscopic theory of magnetism-based spintronics enriched by spin-orbit coupling
| Project/Area Number |
25400339
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | Nagoya University |
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Principal Investigator |
Kohno Hiroshi 名古屋大学, 理学研究科, 教授 (10234709)
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | スピントロニクス / スピン軌道相互作用 / スピントルク / スピン起電力 / スピン波 / 温度勾配 / 輸送現象 / 異常ホール効果 / Rashba型スピン軌道相互作用 / スピン軌道トルク / スピン波スピントルク / 線形応答理論 / 光応答 / 磁気双極子相互作用 / 熱誘起スピン軌道トルク / バーテックス補正 / Dirac点 / スカーミオン / ホール効果 / 磁壁 / スピン移行トルク / Gilbert damping / feedback 効果 |
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| Outline of Final Research Achievements |
We microscopically studied current-induced spin torques and spin motive forces in the presence of Rashba spin-orbit coupling (ROC) in ferromagnetic metals. By calculating torques up to the first order in spatial gradient of the magnetization, we found that the beta-term is enhanced by the Rashba SOC. Thermally induced spin-orbit torques are also examined. We also studied several phenomena that do not involve SOC, such as magnonic torques in ferromagnets, spin motive forces in antiferromagnetic metals, and topological Hall effect, all of which will be studied by including SOC in the future. Works that were unexpected at the beginning were also done, which include anomalous Hall effect driven by dipolar spin waves, and the effect of Rashba SOC on optical properties.
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Report
(5 results)
Research Products
(80 results)
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[Journal Article] Two-barrier stability that allows low power operation in current-induced domain wall motion2013
Author(s)
Kab-Jin Kim, Ryo Hiramatsu, Tomohiro Koyama, Kohei Ueda, Yoko Yoshimura, Daichi Chiba, Kensuke Kobayashi, Yoshinobu Nakatani, Shunsuke Fukami, Michihiko Yamanouchi, Hideo Ohno, Hiroshi Kohno, Gen Tatara, Teruo Ono
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Journal Title
Nature Communications
Volume: 4
Issue: 1
Pages: 2011-2011
DOI
Related Report
Peer Reviewed
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[Presentation] Spin Chirality Mechanics2014
Author(s)
H. Kohno, K. Nakazawa, T. Yamaguchi
Organizer
ICC-IMR / 20th REIMEI International Workshop on "Spin Mechanics 2"
Place of Presentation
早稲田大学
Year and Date
2014-06-24
Related Report
Invited
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