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

研究成果: Article同行評審

40 引文 斯高帕斯(Scopus)

摘要

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.

原文English
文章編號180508
期刊Physical Review B - Condensed Matter and Materials Physics
78
發行號18
DOIs
出版狀態Published - 2008 11月 25

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學

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