Electronic structure in uniform magnetic field and topological invariance
| Project/Area Number |
23540460
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Mathematical physics/Fundamental condensed matter physics
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
ARAI Masao 独立行政法人物質・材料研究機構, 理論計算科学ユニット, 主幹研究員 (40222723)
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| Co-Investigator(Kenkyū-buntansha) |
HATSUGAI Yasuhiro 筑波大学, 数理物質科学研究科, 教授 (80218495)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2011: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | 電子構造 |
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| Research Abstract |
(1) We extended a computer program which calculates electronic structures in uniform magnetic field. Using both MPI and OpenMP, the modified code can run effectively on standard workstation cluster.
(2) An expression for orbital-magnetic moments was derived from Wannier function description. In magnetic field, Wannier function is dressed with phase factors. Using this basis set, magnetic moments were calculated as the derivative of thermodynamic function by applied uniform magnetic field.
(3) Using above results. the magnetic breakdowns were investigated.
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Report
(4 results)
Research Products
(9 results)
