Photoinduced phenomena originated from electron geometrical phases
| Project/Area Number |
22540340
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 I
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
INOUE Junichi 独立行政法人物質・材料研究機構, 理論計算科学ユニット, 主任研究員 (90323427)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Keywords | 光物性 / トポロジカル絶縁体 / 判定法 / 光学的性質 / 光誘起現象 / 量子相転移 / Berry phas / 光学的断熱操作 |
|---|
| Research Abstract |
For two-dimensional topological insulators and a surface state states on three-dimensional topological insulators, we demonstrated that an electron and spin Hall current can be controlled by an application of continuous laser beam. Underline physics of these phenomena is that the application of the laser field turns a electron hopping energy into a variable, and thus topological invariants that are uniquely fixed by given material parameters in turn become externally controllable variables. Consequently, we can expect quantized electron and spin Hall current can be photo-induced under an appropriate condition.
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Report
(4 results)
Research Products
(12 results)
