Superconductivity at 27 K in tetragonal FeSe under high pressure

被引：642

作者：

Mizuguchi, Yoshikazu ^{[1
,2
]}

Tomioka, Fumiaki ^{[1
]}

Tsuda, Shunsuke ^{[1
,3
]}

Yamaguchi, Takahide ^{[1
]}

Takano, Yoshihiko ^{[1
,2
]}

机构：

[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

[2] Univ Tsukuba, Tsukuba, Ibaraki 3058577, Japan

[3] WPI MANA NIMS, Tsukuba, Ibaraki 3050044, Japan

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 15期

关键词：

D O I：

10.1063/1.3000616

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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]

引用

页数：3

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