LOW-TEMPERATURE MICROWAVE SURFACE IMPEDANCE OF THE CONVENTIONAL ORGANIC SUPERCONDUCTOR KAPPA-(BEDT-TTF)2CU(NCS)2

被引：30

作者：

DRESSEL, M

BRUDER, S

GRUNER, G

CARLSON, KD

WANG, HH

WILLIAMS, JM

机构：

[1] UNIV CALIF LOS ANGELES,CTR SOLID STATE SCI,LOS ANGELES,CA 90024

[2] ARGONNE NATL LAB,DIV CHEM & MAT SCI,ARGONNE,IL 60439

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.48.9906

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have performed measurements of the microwave surface impedance Z(S) = R(S) + iX(S) of the organic superconductor kappa-(BEDT-TTF)2Cu(NCS)2 down to T = 0.8 K. The reactance X(S), and therefore the penetration depth lambda, exhibits no temperature dependence for T << T(c). This result is in full agreement with calculations of the BCS ground state and gives no indication of unconventional pairing. Furthermore, we have evaluated the complex conductivity sigma = sigma1 + isigma2 and find a pronounced peak in sigma1 below T(c) which can be identified as a coherence peak.

引用

页码：9906 / 9909

页数：4

共 29 条

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