Coupled superconducting and magnetic order in CeCoIn5

被引：292

作者：

Kenzelmann, M. ^{[1
,2
]}

Straessle, Th. ^{[1
,3
]}

Niedermayer, C. ^{[1
,3
]}

Sigrist, M. ^{[4
]}

Padmanabhan, B. ^{[1
,3
]}

Zolliker, M. ^{[1
]}

Bianchi, A. D. ^{[5
,6
]}

Movshovich, R. ^{[7
]}

Bauer, E. D. ^{[7
]}

Sarrao, J. L. ^{[7
]}

Thompson, J. D. ^{[7
]}

机构：

[1] Paul Scherrer Inst, Lab Dev & Methods, CH-5232 Villigen, Switzerland

[2] ETH, Solid State Phys Lab, CH-8093 Zurich, Switzerland

[3] ETH, Neutron Scattering Lab, CH-5232 Villigen, Switzerland

[4] ETH, Inst Theoret Phys, CH-8093 Zurich, Switzerland

[5] Univ Montreal, Dept Phys, Montreal, PQ H3C 3J7, Canada

[6] Univ Montreal, Regroupement Quebecois Mat Pointe, Montreal, PQ H3C 3J7, Canada

[7] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

SCIENCE | 2008年 / 321卷 / 5896期

基金：

瑞士国家科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1126/science.1161818

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Strong magnetic fluctuations can provide a coupling mechanism for electrons that leads to unconventional superconductivity. Magnetic order and superconductivity have been found to coexist in a number of magnetically mediated superconductors, but these order parameters generally compete. We report that close to the upper critical field, CeCoIn5 adopts a multicomponent ground state that simultaneously carries cooperating magnetic and superconducting orders. Suppressing superconductivity in a first- order transition at the upper critical field leads to the simultaneous collapse of the magnetic order, showing that superconductivity is necessary for the magnetic order. A symmetry analysis of the coupling between the magnetic order and the superconducting gap function suggests a form of superconductivity that is associated with a nonvanishing momentum.

引用

页码：1652 / 1654

页数：3

共 23 条

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