LiFeAs: An intrinsic FeAs-based superconductor with Tc=18 K

  title={LiFeAs: An intrinsic FeAs-based superconductor with Tc=18 K},
  author={Joshua H. Tapp and Zhongjia Tang and Bing Lv and K. Sasmal and Bernd Lorenz and Paul Ching-Wu Chu and Arnold M Guloy},
  journal={Physical Review B},
The synthesis and properties of LiFeAs, a high-${T}_{c}$ Fe-based superconducting stoichiometric compound, are reported. Single crystal x-ray studies reveal that it crystallizes in the tetragonal PbFCl type (P4/nmm) with $a=3.7914(7)\text{ }\text{\AA{}}$ and $c=6.364(2)\text{ }\text{\AA{}}$. Unlike the known isoelectronic undoped intrinsic FeAs compounds, LiFeAs does not show any spin-density wave behavior but exhibits superconductivity at ambient pressures without chemical doping. It exhibits… Expand

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