| Project/Area Number |
19540340
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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 | Nara Institute of Science and Technology |
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Principal Investigator |
TAKAHASHI Akira Nara Institute of Science and Technology, 物質創成科学研究科, 准教授 (80212009)
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| Co-Investigator(Kenkyū-buntansha) |
AIHARA Masaki 奈良先端科学技術大学院大学, 物質創成科学研究科, 教授 (70091163)
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2008: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2007: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
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| Keywords | 光誘起相転移 / 電荷秩序 / 光励起 / ダイナミックス / 低次元強相関電子系 / 協力現象 / 電荷秩序状態 / CDW-SDW量子相転移 / 光吸収スペクトル |
|---|
| Research Abstract |
We theoretically investigate the physical properties of the photoexcited states in the charge-ordered state in (BEDT-TTF)_2X, where the photoinduced phase transition from the charge-ordered insulator to a metal is observed. The major peaks in the lower energy region of the light absorption spectrum are due to the excitation to the charge-ordered insulating states, and broad structures in the higher energy region are due to the excitation to the metallic states. The present results show the possibility that the metallic domains are directly photogenerated in the early stage of the photoinduced phase transition.
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