The Pressure Effects on SmFeAsO$_{0.85}$ and PrFe$_{0.925}$Co$_{0.075}$AsO Superconductors

ORAL

Abstract

We have measured magnetic susceptibility of iron pnictide superconductors SmFeAsO$_{0.85}$ and PrFe$_{0.925}$Co$_{0.075}$AsO under hydrostatic pressure up to 1.15 GPa. Our results indicate that the pressure dependences of T$_{C}$ and superfluid density in both systems are positively correlated which suggests that these quaternary iron-based superconductors are not conventional BCS ones.

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Authors

  • X.L. Dong

  • W. Lu

  • J. Yang

  • W. Yi

  • Z.C. Li

  • C. Zhang

  • Z.A. Ren

  • G.C. Che

  • L.L. Sun

  • F. Zhou

  • X.J. Zhou

  • Z.X. Zhao

    • National Laboratory for Superconductivity, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190