EPJ Web of Conferences (Mar 2013)

Ultrafast quasiparticle dynamics of FeTe0.75Se0.25 superconductor

  • Katagiri T.,
  • Kitajima M.,
  • Takeda J.,
  • Katayama I.,
  • Eda T.,
  • Hu J.,
  • Kabasawa Y.,
  • Sasagawa T.,
  • Nakamura K. G.

DOI
https://doi.org/10.1051/epjconf/20134103009
Journal volume & issue
Vol. 41
p. 03009

Abstract

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The electron-phonon coupling constant (λ≈0.45) obtained from femtosecond pump-probe reflection measurements suggests that a phonon-mediated process cannot be the dominant mechanism for superconductivity of FeTe0.75Se0.25.