TY - JOUR
T1 - LiFeAs
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
Y1 - 2008/8/18
N2 - 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.
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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U2 - 10.1103/PhysRevB.78.060505
DO - 10.1103/PhysRevB.78.060505
M3 - Article
AN - SCOPUS:50449095589
VL - 78
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 6
M1 - 060505
ER -