Increase of Superconducting Correlation due to Dimensionality Change in Quasi-One-Dimensional Conductors
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- Fuseya Yuki
- Department of Physics, University of Tokyo
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- Ogata Masao
- Department of Physics, University of Tokyo
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Response functions for spin-density-wave (SDW) and d-wave singlet superconductivity (dSC) in quasi-one-dimensional (Q1D) electron systems are calculated by a renormalization group technique. It is shown that the response functions for both SDW, χs, and dSC, χd, are enhanced by interchain hopping, t⊥, i.e., by quasi-one dimensionality. When the Fermi surface deviates from perfect nesting, χs saturates below the energy scale of imperfectness of the nesting, while χd is hardly affected. Consequently, the superconducting correlation increases even away from the SDW phase. This gives a possible interpretation of the recent experimental results of Q1D organic conductor (TMTTF)2SbF6, where Tc increases even away from the SDW phase.
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 (9), 093701-093701, 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
- 1390001204196557696
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- NII論文ID
- 130005296983
- 110006418589
- 210000106864
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- NII書誌ID
- AA00704814
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 8906948
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- 本文言語コード
- en
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- NDL
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