Exploring the Fragile Antiferromagnetic Superconducting Phase in CeCoIn5

被引：33

作者：

Blackburn, E. ^{[1
]}

Das, P. ^{[2
]}

Eskildsen, M. R. ^{[2
]}

Forgan, E. M. ^{[1
]}

Laver, M. ^{[3
,4
,5
]}

Niedermayer, C. ^{[3
]}

Petrovic, C. ^{[6
]}

White, J. S. ^{[1
,3
]}

机构：

[1] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

[2] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

[3] Paul Scherrer Inst, Neutron Scattering Lab, CH-5232 Villigen, Switzerland

[4] Tech Univ Denmark, Riso DTU, Mat Res Div, DK-4000 Roskilde, Denmark

[5] Univ Copenhagen, Niels Bohr Inst, Nanosci Ctr, DK-2100 Copenhagen, Denmark

[6] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.105.187001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

CeCoIn5 is a heavy fermion type-II superconductor showing clear signs of Pauli-limited superconductivity. A variety of measurements give evidence for a transition at high magnetic fields inside the superconducting state, when the field is applied either parallel to or perpendicular to the c axis. When the field is perpendicular to the c axis, antiferromagnetic order develops on the high-field side of the transition. This order remains as the field is rotated out of the basal plane, but the associated moment eventually disappears above 17 degrees, indicating that anomalies seen with the field parallel to the c axis are not related to this magnetic order. We discuss the implications of this finding.

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页数：4

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