Superconductivity in ternary iron pnictides: AFe2As2 (A = alkali metal) and LiFeAs

M. Gooch, B. Lv, K. Sasmal, J. H. Tapp, Z. J. Tang, A. M. Guloy, B. Lorenz, C. W. Chu

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26 引文 斯高帕斯(Scopus)

摘要

Superconductivity is observed in AFe2As2 (A = Cs, Rb, K) at temperatures below 4 K. The metastable compound NaFe2As 2 displays superconductivity with a high Tc=25K. These compounds are considered to be strongly hole-overdoped. The stoichiometric LiFeAs is superconducting below 18 K. The origin of superconductivity in LiFeAs is critically investigated and we show that Li deficiency cannot explain the experimental results. We propose that superconducting LiFeAs is stoichiometric and it is equivalent to the high-pressure state of other undoped iron pnictides.

原文English
頁(從 - 到)S276-S279
期刊Physica C: Superconductivity and its applications
470
發行號SUPPL.1
DOIs
出版狀態Published - 2010 十二月

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學
  • 能源工程與電力技術
  • 電氣與電子工程

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