Superconductivity and ferromagnetism in EuFe2(As1-xPx)2

被引：62

作者：

Cao, Guanghan ^{[1
]}

Xu, Shenggao

Ren, Zhi

Jiang, Shuai

Feng, Chunmu

Xu, Zhu'an

机构：

[1] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2011年 / 23卷 / 46期

关键词：

HIGH-TEMPERATURE SUPERCONDUCTIVITY; CRITICAL FIELD; COEXISTENCE; DESTRUCTION; PNICTIDES;

D O I：

10.1088/0953-8984/23/46/464204

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Superconductivity and ferromagnetism are two antagonistic cooperative phenomena, which makes it difficult for them to coexist. Here we demonstrate experimentally that they do coexist in EuFe2(As1-xPx)(2) with 0.2 <= x <= 0.4, in which superconductivity is associated with Fe 3d electrons and ferromagnetism comes from the long-range ordering of Eu 4f moments via Ruderman-Kittel-Kasuya-Yosida (RKKY) interactions. The coexistence features large saturated ferromagnetic moments, high and comparable superconducting and magnetic transition temperatures, and broad coexistence ranges in temperature and field. We ascribe this unusual phenomenon to the robustness of superconductivity as well as the multi-orbital character of iron pnictides.

引用

页数：5

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