Charge-Ordered State versus Dimer-Mott Insulator at Finite Temperatures
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- Yoshioka Hideo
- Department of Physics, Nara Women’s University
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- Tsuchiizu Masahisa
- Department of Physics, Nagoya University
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- Seo Hitoshi
- Synchrotron Radiation Research Center, Japan Atomic Energy Agency
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We theoretically investigate the competition between charge-ordered state and Mott insulating state at finite temperatures in quarter-filled quasi-one-dimensional electron systems, by studying dimerized extended Hubbard chains with interchain Coulomb interactions. In order to take into account one-dimensional fluctuations properly, we apply the bosonization method to an effective model obtained by the interchain mean-field approximation. The results show that lattice dimerization, especially in the critical region, and frustration in the interchain Coulomb interactions reduce the charge-ordering phase transition temperature and enlarge the dimer-Mott insulating phase. We also derive a general formula of the Knight shift in the charge-ordered phase and its implication to experiments is discussed.
収録刊行物
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- Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ
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Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ 76 (10), 103701-103701, 2007
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390001204195980160
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- NII論文ID
- 130005296517
- 110006448291
- 210000106898
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- NII書誌ID
- AA00704814
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 8947846
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 使用不可
