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Evolution of Two-Gap Behavior of the Superconductor FeSe1-x

Source: Phys. Rev. Lett. 104, 087004 (2010); doi:10.1103/PhysRevLett.104.087004

Published 25 February 2010

PACS
  • 74.70.-b
    Superconducting materials
  • 74.25.Jb
    Electronic structure of superconductors
  • 74.62.Fj
    Pressure effects on superconducting transition temperature
  • 76.75.+i
    Muon spin rotation and relaxation in condensed matter
  • YEAR: 2010
PUBLICATION DATA
Publisher:
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R. Khasanov,1 M. Bendele,1,2 A. Amato,1 K. Conder,3 H. Keller,2 H.-H. Klauss,4 H. Luetkens,1 and E. Pomjakushina3
1Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
2Physik-Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
3Laboratory for Developments and Methods, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
4IFP, TU Dresden, D-01069 Dresden, Germany
The superfluid density, rhos, of the iron chalcogenide superconductor, FeSe1-x, was studied as a function of pressure by means of muon-spin rotation. The analysis of rhos(T) within the two-gap scheme reveals that the effect on both, the transition temperature Tc and rhos(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. ©2010 The American Physical Society
History: Received 2 December 2009; published 25 February 2010
Permalink: http://link.aps.org/abstract/PRL/v104/e087004
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