Pressure-induced shift of Tc in KxSr 1-xFe2As2 (x=0.2,0.4,0.7): Analogy to the high-Tc cuprate superconductors

Melissa Gooch, Bing Lv, Bernd Lorenz, Arnold M. Guloy, Ching Wu Chu

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40 Citations (Scopus)


The systematic pressure shifts of Tc were investigated in the whole phase diagram of the FeAs-based superconducting compound K xSr1-xFe2As2. Different regions, arising from corresponding responses of Tc to pressure (dT c/dp>0, ≃0, or <0), can be clearly distinguished. This reveals an interesting similarity of the FeAs superconductors and the high-Tc cuprates. This behavior is a manifestation of the layered structure of the FeAs compounds and the pressure-induced charge transfer between the (Fe2As2) and (K/Sr) layers. The coexistence of superconductivity and spin-density wave behavior were also observed, and the pressure effects on the latter is explored.

Original languageEnglish
Article number180508
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number18
Publication statusPublished - 2008 Nov 25

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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