On the Fulde-Ferrell State in Spatially Isotropic Superconductors.

• Ohashi Yoji

  Department of Physics, University of Toronto, Toronto, Ontario, Canada M5S 1A7 Institute of Physics, University of Tsukuba, Ibaraki 305

抄録

Effects of superconducting fluctuations on the Fulde-Ferrell (FF) state are discussed in a spatially isotropic three-dimensional superconductor under a magnetic field. For this system, Shimahara recently showed that within the phenomenological Ginzburg-Landau theory, the long-range order of the FF state is suppressed by the phase fluctuation of the superconducting order parameter [H. Shimahara: J. Phys. Soc. Jpn. 67 (1998) 1872; Physica B 259-261 (1999) 492]. In this letter, we investigate this instability of the FF state against superconducting fluctuations from the microscopic viewpoint, employing the theory developed by Nozières and Schmitt-Rink in the BCS-BEC crossover field. Besides the absence of the second-order phase transition associated with the FF state, we show that even if the pairing interaction is weak, the shift of the chemical potential from the Fermi energy due to the fluctuations is crucial near the critical magnetic field of the FF state obtained within the mean-field theory.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 71 (11), 2625-2628, 2002

  一般社団法人 日本物理学会

キーワード

• Fulde-Ferrell state
• superconductivity
• superconducting fluctuations

詳細情報

• CRID: 1390001204183432832
• NII論文ID: 210000103941
• NII論文ID: 110001954113
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.71.2625
• BIBCODE: 2002JPSJ...71.2625O
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 6359233
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6359233
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.71.2625
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可