Topological structures and transport phenomena in a spin-orbit coupled system
| Project/Area Number |
15K17726
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Atomic/Molecular/Quantum electronics
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| Research Institution | Nagoya University (2016-2019)
The University of Tokyo (2015) |
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Principal Investigator |
Kawaguchi Yuki 名古屋大学, 工学研究科, 准教授 (00456261)
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| Project Period (FY) |
2015-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
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| Keywords | 冷却原子気体 / トポロジカル構造 / スピン軌道相互作用 / トポロジカル超伝導 / 磁気スキルミオン / ボース・アインシュタイン凝縮 / 非エルミート / トポロジカル物質 / トポロジカル励起 / スキルミオン / 物性理論 / 量子エレクトロニクス / スピンエレクトロニクス |
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| Outline of Final Research Achievements |
We studied topological quantum phenomena caused by spin-orbit coupling. For Bose-Einstein condensates (BECs) of cold atmoic gases, we have discussed the spin Hall effect, BEC dynamics under a non-Abelian gauge field, and topological invariants defined in a non-Hermitian system, which arise from the magnetic dipole-dipole interaction or Laser-induced spin-orbital coupling. For solid-state systems, we have investigated transport phenomena and magnetic skyrmion structure caused by spin-orbit interaction originating from relativistic effects.
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| Academic Significance and Societal Importance of the Research Achievements |
冷却原子気体系および固体電子系においてスピン軌道相互作用によりもたらされる新奇現象を明らかにした。特に、磁気的双極子相互作用がスピン軌道結合として働いてスピンホール効果を起こすこと、および、非エルミート系において、例外点が存在する場合においてもトポロジカル数が定義できることを示したのは我々の研究が初めてである。
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Report
(6 results)
Research Products
(67 results)
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[Journal Article] Smectic Liquid-Crystalline Structure of Skyrmions in Chiral Magnet Co8.5Zn7.5Mn4 (110) Thin Film2019
Author(s)
T. Nagase, M. Komatsu, Y. G. So, T. Ishida, H. Yoshida, Y. Kawaguchi, Y. Tanaka, K. Saitoh, N. Ikarashi, M. Kuwahara, and M. Nagao
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Journal Title
Physical Review Letters
Volume: 123
Issue: 13
Pages: 137203-137203
DOI
Related Report
Peer Reviewed / Open Access
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