2012 Fiscal Year Final Research Report
Non-equilibrium dynamics of strongly correlated electron system with spin-orbit coupling
| Project/Area Number |
22740240
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Condensed matter physics II
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| Research Institution | Japan Atomic Energy Agency |
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Principal Investigator |
ONISHI Hiroaki 独立行政法人日本原子力研究開発機構, 先端基礎研究センター, 研究副主幹 (10354903)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 強相関電子系 / 軌道自由度 / スピン軌道相互作用 / イリジウム化合物 / 数値計算 |
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| Research Abstract |
To clarify a role of the spin-orbit coupling in the emergence of novel spin-orbital states in 5d-electron compounds such as Sr 2_IrO_4 , we investigate ground-state properties of a multi-orbital model numerically. We find that the spin-orbit-induced state exhibits anisotropic charge and spin distributions. Regarding the photo-induced phase transition of multi-orbital systems, we numerically analyze the non-equilibrium dynamics. We observe that the time evolution of the spin-orbital state is caused by a pair-hopping process that is characteristic of multi-orbital systems.
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[Presentation]2011
Author(s)
山田進, 五十嵐亮, 奥村雅彦, 大西弘明, 山本篤史, 町田昌彦
Organizer
日本物理学会2011 年秋季大会
Place of Presentation
富山大学
Year and Date
2011-09-22
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