Millimeter-wave magneto-optical determination of the anisotropy of the superconducting order parameter in the molecular superconductor κ-(BEDT-TTF)2Cu(NCS)2

被引：55

作者：

Schrama, JM

Rzepniewski, E

Edwards, RS

Singleton, J

Ardavan, A

Kurmoo, M

Day, P

机构：

[1] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England

[2] IPCMS, F-67037 Strasbourg, France

[3] UCL Royal Inst Great Britain, London W1X 4BS, England

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.83.3041

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have used a millimeter-wave magneto-optical technique to study the angle dependence of the high-frequency conductivity of the molecular superconductor kappa-(BEDT-TTF)(2)Cu(NCS)(2). The data strongly suggest that the superconducting gap has nodes directed along the b and c directions of the crystal, in agreement with recent theoretical predictions. This supports the idea that the superconductivity in kappa-(BEDT-TTF)(2)Cu(NCS)(2) is d wave in nature, and is mediated by spin fluctuations.

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页码：3041 / 3044

页数：4

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