Superconductivity Induced by Phosphorus Doping and Its Coexistence with Ferromagnetism in EuFe2(As0.7P0.3)2

被引：261

作者：

Ren, Zhi ^{[1
]}

Tao, Qian ^{[1
]}

Jiang, Shuai ^{[1
]}

Feng, Chunmu ^{[2
]}

Wang, Cao ^{[1
]}

Dai, Jianhui ^{[1
]}

Cao, Guanghan ^{[1
]}

Xu, Zhu'an ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China

[2] Zhejiang Univ, Test & Anal Ctr, Hangzhou 310027, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 13期

关键词：

QUANTUM CRITICALITY; PNICTIDES; METAL;

D O I：

10.1103/PhysRevLett.102.137002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied EuFe2(As0.7P0.3)(2) by the measurements of x-ray diffraction, electrical resistivity, thermopower, magnetic susceptibility, magnetoresistance, and specific heat. Partial substitution of As with P results in the shrinkage of lattice, which generates chemical pressure to the system. It is found that EuFe2(As0.7P0.3)(2) undergoes a superconducting transition at 26 K, followed by ferromagnetic ordering of Eu2+ moments at 20 K. This finding is the first observation of superconductivity stabilized by internal chemical pressure, and supplies a rare example showing the coexistence of superconductivity and ferromagnetism in the ferroarsenide family.

引用

页数：4

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