Pressure-induced superconductivity in CaFe2As2

被引:205
|
作者
Park, Tuson [1 ,2 ]
Park, Eunsung [2 ]
Lee, Hanoh [1 ]
Klimczuk, T. [1 ,3 ]
Bauer, E. D. [1 ]
Ronning, F. [1 ]
Thompson, J. D. [1 ]
机构
[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[2] Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea
[3] Gdansk Univ Technol, Fac Appl Phys & Math, PL-80952 Gdansk, Poland
关键词
D O I
10.1088/0953-8984/20/32/322204
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
We report pressure-induced superconductivity in a single crystal of CaFe2As2. At atmospheric pressure, this material is antiferromagnetic below 170 K but under an applied pressure of 0.69 GPa becomes superconducting, with a transition temperature T-c exceeding 10 K. The rate of Tc suppression with applied magnetic field is - 0.7 K T-1, giving an extrapolated zero-temperature upper critical field of 10 - 14 T.
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页数:3
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