Evolution of two-gap behavior of the superconductor FeSe_1-x

R. Khasanov; M. Bendele; A. Amato; K. Conder; H. Keller; H. -H. Klauss; H. Luetkens; E. Pomjakushina

doi:10.1103/PhysRevLett.104.087004

Evolution of two-gap behavior of the superconductor FeSe_1-x

Superconductivity 2015-05-14 v1

Authors: R. Khasanov , M. Bendele , A. Amato , K. Conder , H. Keller , H. -H. Klauss , H. Luetkens , E. Pomjakushina

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Abstract

The superfluid density, \rho_s, of the iron chalcogenide superconductor, FeSe_1-x, was studied as a function of pressure by means of muon-spin rotation. The zero-temperature value of \rho_s increases with increasing transition temperature T_c (increasing pressure) following the tendency observed for various Fe-based and cuprate superconductors. The analysis of \rho_s(T) within the two-gap scheme reveals that the effect on both, T_c and \rho_s(0), is entirely determined by the band(s) where the large superconducting gap develops, while the band(s) with the small gap become practically unaffected.

Keywords

two-gap superconductor iron chalcogenide muon-spin rotation superfluid density pressure dependence

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@article{arxiv.0912.0471,
  title  = {Evolution of two-gap behavior of the superconductor FeSe_1-x},
  author = {R. Khasanov and M. Bendele and A. Amato and K. Conder and H. Keller and H. -H. Klauss and H. Luetkens and E. Pomjakushina},
  journal= {arXiv preprint arXiv:0912.0471},
  year   = {2015}
}

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5 pages, 3 figures

Evolution of two-gap behavior of the superconductor FeSe_1-x

Abstract

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