Hexagonal and square flux line lattices in CeCoIn5 -: art. no. 187001

被引：52

作者：

Eskildsen, MR

Dewhurst, CD

Hoogenboom, BW

Petrovic, C

Canfield, PC

机构：

[1] Univ Geneva, Dept Phys Mat Condensee, CH-1211 Geneva 4, Switzerland

[2] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France

[3] Iowa State Univ, Ames Lab, Ames, IA 50011 USA

[4] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.90.187001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using small-angle neutron scattering, we have imaged the magnetic flux line lattice (FLL) in the d-wave heavy-fermion superconductor CeCoIn5. At low fields we find a hexagonal FLL. Around 0.6 T this undergoes what is most likely a first-order transition to square symmetry, with the nearest neighbors oriented along the gap node directions. This orientation of the square FLL is consistent with theoretical predictions based on the d-wave order parameter symmetry.

引用

页数：4

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