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

Joshua H. Tapp; Zhongjia Tang; Bing Lv; Kalyan Sasmal; Bernd Lorenz; Paul C.W. Chu; Arnold M. Guloy

doi:10.1103/PhysRevB.78.060505

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

Joshua H. Tapp, Zhongjia Tang, Bing Lv, Kalyan Sasmal, Bernd Lorenz, Paul C.W. Chu, Arnold M. Guloy

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Abstract

The synthesis and properties of LiFeAs, a high- Tc 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) Å and c=6.364 (2) Å. 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 a respectable transition temperature of Tc =18 K with electronlike carriers and a very high critical field, Hc2 (0) >80 T. LiFeAs appears to be the chemical equivalent of the infinite layered compound of the high- Tc cuprates.

Original language	English
Article number	060505
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	78
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.78.060505
Publication status	Published - 2008 Aug 18

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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

abstract = "The synthesis and properties of LiFeAs, a high- Tc 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) {\AA} and c=6.364 (2) {\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 a respectable transition temperature of Tc =18 K with electronlike carriers and a very high critical field, Hc2 (0) >80 T. LiFeAs appears to be the chemical equivalent of the infinite layered compound of the high- Tc cuprates.",

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T2 - An intrinsic FeAs-based superconductor with Tc = 18 K

AU - Tapp, Joshua H.

AU - Tang, Zhongjia

AU - Lv, Bing

AU - Sasmal, Kalyan

AU - Lorenz, Bernd

AU - Chu, Paul C.W.

AU - Guloy, Arnold M.

PY - 2008/8/18

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AB - The synthesis and properties of LiFeAs, a high- Tc 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) Å and c=6.364 (2) Å. 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 a respectable transition temperature of Tc =18 K with electronlike carriers and a very high critical field, Hc2 (0) >80 T. LiFeAs appears to be the chemical equivalent of the infinite layered compound of the high- Tc cuprates.

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