MICROWAVE SURFACE IMPEDANCE OF KAPPA-(BEDT-TTF)2CU(NCS)2, WHERE BEDT-TTF IS BIS(ETHYLENEDITHIO)TETRATHIAFULVALENE - EVIDENCE FOR UNCONVENTIONAL SUPERCONDUCTIVITY

被引：54

作者：

ACHKIR, D ^{[1
]}

POIRIER, M ^{[1
]}

BOURBONNAIS, C ^{[1
]}

QUIRION, G ^{[1
]}

LENOIR, C ^{[1
]}

BATAIL, P ^{[1
]}

JEROME, D ^{[1
]}

机构：

[1] UNIV PARIS 11,PHYS SOLIDE LAB,F-91405 ORSAY,FRANCE

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.47.11595

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High-sensitivity microwave-impedance measurements performed on the quasi-two-dimensional organic superconductor kappa-(BEDT-TTF)2Cu(NCS)2 give sound evidence for an unconventional type of superconductivity. The penetration depth lambda(T) is in excellent agreement with recent muon-spin-relaxation measurements which are consistent with anisotropic pairings with lines of nodes in the energy pp. The real part of the conductivity sigma1 shows a peaked structure which is free of coherence factor effects and results from a competition between two temperature dependences, the penetration depth and the inelastic relaxation time of the normal fluid.

引用

页码：11595 / 11598

页数：4

共 27 条

[1] EVIDENCE FOR RAPID SUPPRESSION OF QUASI-PARTICLE SCATTERING BELOW T(C) IN YBA2CU3O7-DELTA [J].