Anomalous superconductivity and field-induced magnetism in CeCoIn5 -: art. no. 100514

被引：62

作者：

Murphy, TP ^{[1
]}

Hall, D

Palm, EC

Tozer, SW

Petrovic, C

Fisk, Z

Goodrich, RG

Pagliuso, PG

Sarrao, JL

Thompson, JD

机构：

[1] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA

[2] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

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

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.65.100514

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the heavy fermion superconductor CeCoIn5 (T-c=2.3 K) the critical field is large, anisotropic, and displays hysteresis. The magnitude of the critical-field anisotropy in the a-c plane can be as large as 7 T and depends on orientation. Critical-field measurements in the (110) plane suggest two-dimensional superconductivity, whereas conventional effective-mass anisotropy is observed in the (100) plane. Two distinct field-induced magnetic phases are observed: H-a appears deep in the superconducting phase, while H-b intersects Hc(2) at T=1.4 K and extends well above T-c. These observations suggest the possible realization of a direct transition from ferromagnetism to Fulde-Ferrel-Larkin-Ovchinnikov superconductivity in CeCoIn5.

引用

页码：1 / 4

页数：4

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