2012 Fiscal Year Final Research Report
Microscopic theory of current-spin interaction in ferromagnets, and its extension to thermal phenomena
| Project/Area Number |
21540336
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | Osaka University |
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Principal Investigator |
KOHNO Hiroshi 大阪大学, 大学院・基礎工学研究科, 准教授 (10234709)
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| Project Period (FY) |
2009 – 2012
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| 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 |
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| 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.
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[Journal Article] Current-induced magnetic domain wall motion below intrinsic threshold triggered by Walker breakdown2012
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
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Journal Title
Nature Nanotechnology
Volume: 7
Pages: 635-639
Peer Reviewed
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[Journal Article] Geometry-dependent scaling of critical current densities for current-induced domain wall motion and transformations2009
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
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Journal Title
Physical Review B
Volume: 80
Pages: 184405 1-4
Peer Reviewed
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[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
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Journal Title
Nature Communications
Volume: (accepted)
Peer Reviewed
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