Abrupt Emergence of Pressure-Induced Superconductivity of 34 K in SrFe2As2: A Resistivity Study under Pressure

被引：104

作者：

Kotegawa, Hisashi ^{[1
,2
]}

Sugawara, Hitoshi ^{[3
]}

Tou, Hideki ^{[1
,2
]}

机构：

[1] Kobe Univ, Dept Phys, Kobe, Hyogo 6588530, Japan

[2] Transformat Res Project Iron Pnictides, JST, Chiyoda Ku, Tokyo 1020075, Japan

[3] Univ Tokushima, Fac Integrated Arts & Sci, Tokushima 7708502, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2009年 / 78卷 / 01期

关键词：

SrFe2As2; superconductivity; pressure; single crystal;

D O I：

10.1143/JPSJ.78.013709

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report resistivity measurement under pressure in single crystals of SrFe2As2, which is one of the parent materials of Fe-based superconductors. The structural and anti ferromagnetic (AFM) transition of T-0 = 198 K at ambient pressure is suppressed under pressure, and the ordered phase disappears above P-c similar to 3.6-3.7 GPa. Superconductivity with a sharp transition appears accompanied by the suppression of the AFM state. T-c exhibits a maximum of 34.1 K, which is realized close to the phase boundary at P-c. This T-c is the highest among those. of the stoichiometric Fe-based Superconductors.

引用

页数：4

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