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      Unconventional pairing originating from the disconnected Fermi surfaces of superconducting LaFeAsO1-xFx.

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          Abstract

          For a newly discovered iron-based high T_{c} superconductor LaFeAsO1-xFx, we have constructed a minimal model, where inclusion of all five Fe d bands is found to be necessary. The random-phase approximation is applied to the model to investigate the origin of superconductivity. We conclude that the multiple spin-fluctuation modes arising from the nesting across the disconnected Fermi surfaces realize an extended s-wave pairing, while d-wave pairing can also be another candidate.

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          Author and article information

          Journal
          Phys Rev Lett
          Physical review letters
          American Physical Society (APS)
          0031-9007
          0031-9007
          Aug 22 2008
          : 101
          : 8
          Affiliations
          [1 ] Department of Applied Physics and Chemistry, The University of Electro -Communications, Chofu, Tokyo 182-8585, Japan.
          Article
          10.1103/PhysRevLett.101.087004
          18764652
          9307a530-d56d-4d66-b21f-912524378958
          History

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