Superconductivity at 27 K in tetragonal FeSe under high pressure
Superconductivity at 27 K in tetragonal FeSe under high pressure
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DOI：
10.1063/1.3000616
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发表时间：
2008-10-13
影响因子：
4
通讯作者：
Takano, Yoshihiko
中科院分区：
文献类型：
--
作者：
Mizuguchi, Yoshikazu;Tomioka, Fumiaki;Takano, Yoshihiko
在高压下观察到四元FeSe超导体的超导转变温度T（c）有很大的提高。在1.48 GPa下，起始温度高达27 K，压力系数高达9.1 K/GPa。在1.48 GPa下，上临界场H（c2）估计为72 T。由于高的H（c2），FeSe系统可以应用于超导线材。(C)2008年美国物理学会。[DOI：10.1063/1.3000616]
A huge enhancement of the superconducting transition temperature T(c) was observed in a tetragonal FeSe superconductor under high pressure. The onset temperature was as high as 27 K at 1.48 GPa and the pressure coefficient showed an extremely high value of 9.1 K/GPa. The upper critical field H(c2) was estimated to be similar to 72 T at 1.48 GPa. Because of the high H(c2), the FeSe system can be applied to superconducting wire rods. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.3000616]