Bulk superconductivity at 2.6 K in undoped RbFe2As2

被引：38

作者：

Bukowski, Z. ^{[2
]}

Weyeneth, S. ^{[1
]}

Puzniak, R. ^{[3
]}

Karpinski, J. ^{[2
]}

Batlogg, B. ^{[2
]}

机构：

[1] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland

[2] Swiss Fed Inst Technol, Solid State Phys Lab, CH-8093 Zurich, Switzerland

[3] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2010年 / 470卷

关键词：

RbFe2As2; Iron pnictides; Upper critical field; Transition temperature; Superconductivity;

D O I：

10.1016/j.physc.2009.11.103

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The iron arsenide RbFe2As2 with the ThCr2Si2-type structure is found to be a bulk superconductor with T-c = 2.6 K. The onset of diamagnetism was used to estimate the upper critical field H-c2(T), resulting in mu(0)dH(c2)/dT similar or equal to -1.4 T/K and an extrapolated mu H-0(c2)(0) similar or equal to 2.5 T. As a new representative of iron pnictide superconductors, superconducting RbFe2As2 contrasts with BaFe2As2, where the Fermi level is higher and a magnetic instability is observed. Thus, the solid solution series (Rb, Ba)Fe2As2 is a promising system to study the cross-over from superconductivity to magnetism. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：S328 / S329

页数：2

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