Superconductivity at 52 K in iron based F doped layered quaternary compound Pr[O1–xFx]FeAs

Authors:
  • ZRZ. A. Ren
    Z. A. Ren
  • JYJ. Yang
    J. Yang
  • WLW. Lu
    W. Lu
  • GCG. C. Che
    G. C. Che
  • XDX. L. Dong
    X. L. Dong
  • LSL. L. Sun
    L. L. Sun
  • ZZZ. X. Zhao
    Z. X. Zhao

Abstract
Here the authors report that by a high pressure synthesis method, superconductivity with an onset transition temperature at 52 K was discovered in a fluorine-doped quaternary iron-arsenide compound Pr[O1-xFx]FeAs, with the zero resistivity and Meissner transition appeared at 44 K and 50 K respectively. As the first non-cuprate compound that superconducts above 50 K, this discovery places these iron arsenide compounds to the second high temperature superconducting family explicitly.
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