| Project/Area Number |
25400344
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Condensed matter physics II
|
|---|
| Research Institution | Institute of Physical and Chemical Research |
|---|
Principal Investigator |
Tatara Gen 国立研究開発法人理化学研究所, 創発物性科学研究センター, チームリーダー (10271529)
|
|---|
| Research Collaborator |
SHIBATA Junya 東洋大学, 理工学部, 准教授 (20391972)
TAKEUCHI Akihito 青山学院大学, 理工学部, 助教 (80738328)
KONO Hiroshi 名古屋大学, 理学部, 教授 (10234709)
|
|---|
| Project Period (FY) |
2013-04-01 – 2016-03-31
|
| Project Status |
Completed (Fiscal Year 2015)
|
| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
|
|---|
| Keywords | スピン電荷変換 / スピン流 / 電磁交差相関 / メタマテリアル / スピン軌道相互作用 / スピン起電力 / スピンＢｅｒｒｙ位相 / モノポール / スピンBerry位相 |
|---|
| Outline of Final Research Achievements |
Conversion of spin to other degrees of freedom is essential in spintronics. We have studied the conversion mechanisms of spin to electric current and light by a microscopic theory and obtained the following results. We have shown that the spin-charge conversion induced by spin-orbit interaction is described in terms of an effective electromagnetic field acting on electron spin. This effective field is an extension of spin Berry's phase to include spin-orbit interaction. We further demonstrated that the effective electromagnetic field results in a directional dichroism for light by causing the Doppler shift with respect to the intrinsic flow of electron spin. We have also presented a thermal vector potential formulation for describing thermal transport phenomena.
|
