2012 Fiscal Year Final Research Report
Microscopic theory of spin transport phenomena
| Project/Area Number |
22340104
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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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 | The Institute of Physical and Chemical Research (2012)
Tokyo Metropolitan University (2010-2011) |
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Principal Investigator |
TATARA Gen 独立行政法人理化学研究所, 創発スピン物性理論研究チーム, チームリーダー (10271529)
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| Co-Investigator(Kenkyū-buntansha) |
KOHNO Hiroshi 大阪大学, 基礎工学研究科, 准教授 (10234709)
SHIBATA Junya 東洋大学, 理工学部, 准教授 (20391972)
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| Project Period (FY) |
2010 – 2012
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| Keywords | スピントロニクス / スピン流 |
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| Research Abstract |
Spin current is a key concept of spintronics. So far, several methods has been known to generate spin current, including the spin pumping effect induced by magnetization dynamics. For detection of spin current, the inverse spin Hall effect has been widely used. We have studied these effects based on a microscopic theory, and discuss the spin-charge conversion mechanism. We have found that there is a novel monopole in the spin pumping + inverse spin Hall systems. The monopole, a spin damping monopole, induces the electric current via the Ampere's law and plays an essential role in converting spin transport to charge transport.
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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] Current-driven domain wall motion across a wide temperature range in a (Ga,Mn)(As,P) device2010
Author(s)
Wang, K. Y.; Edmonds, K. W.; Irvine, A. C.; Tatara, G.; Ranieri, E. D.; Wunderlich, J.; Olejnik, K.; Rushforth, A. W.; Campion, R. P.; Williams, D. A.; Foxon, C. T. and Gallagher, B. L.
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Journal Title
Appl. Phys. Lett. 97
Volume: 262102
Pages: 1-3
Peer Reviewed
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