Effect of pressure on the superconducting critical temperature of La[O 0.89F0.11]FeAs and Ce[O0.88F 0.12]FeAs

Academic Article


  • We have performed several high-pressure resistivity experiments on the recently discovered superconductors La[O0.89F0.11]FeAs and Ce[O0.88F0.12]FeAs. At ambient pressure, these materials have superconducting onset temperatures Tc of 28 K and 44 K, respectively. While the Tc of La[00.89F0.11 ]FeAs goes through a maximum between 10 and 68 kbar, in qualitative agreement with a recent report by Takahashi et al., the Tc of Ce[O 0.88F0.12]FeAs decreases monotonically over the measured pressure range. At 265 kbar, the Tc of the cerium-based compound has been suppressed below 1.1 K. © 2008 Eisevier B.V. All rights reserved.
  • Authors

    Digital Object Identifier (doi)

    Author List

  • Zocco DA; Hamlin JJ; Baumbach RE; Maple MB; McGuire MA; Sefat AS; Sales BC; Jin R; Mandrus D; Jeffries JR
  • Start Page

  • 2229
  • End Page

  • 2232
  • Volume

  • 468
  • Issue

  • 21