Heat conduction in κ-(BEDT-TTF)2X superconductors

被引:6
作者
Belin, S [1 ]
Behnia, K
Ribault, M
Deluzet, A
Batail, P
机构
[1] Univ Paris Sud, Phys Solides Lab, CNRS, F-91405 Orsay, France
[2] Univ Nantes, Inst Mat Nantes, F-44322 Nantes, France
关键词
heat conduction; superconducting transition; organic superconductors;
D O I
10.1016/S0379-6779(98)00399-3
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We present the first study of thermal conductivity of a quasi two dimensional organic superconductor. kappa-(BEDT-TTF)(2)Cu(NCS)(2) presents features which have already been detected in the high T-c cuprates. Notably we observed an increase of the thermal conductivity at the superconducting transition which is suppressed by a moderate magnetic field. At low temperatures we clearly resolved a residual electronic contribution close to the universal limit value which is consistent with an anisotropic pairings with lines of nodes in the superconducting gap function.
引用
收藏
页码:2046 / 2047
页数:2
相关论文
共 19 条
[1]   MICROWAVE SURFACE IMPEDANCE OF KAPPA-(BEDT-TTF)2CU(NCS)2, WHERE BEDT-TTF IS BIS(ETHYLENEDITHIO)TETRATHIAFULVALENE - EVIDENCE FOR UNCONVENTIONAL SUPERCONDUCTIVITY [J].
ACHKIR, D ;
POIRIER, M ;
BOURBONNAIS, C ;
QUIRION, G ;
LENOIR, C ;
BATAIL, P ;
JEROME, D .
PHYSICAL REVIEW B, 1993, 47 (17) :11595-11598
[2]   Thermal conductivity as a probe of unconventional superconducting gap (vol 103, pg 148, 1997) [J].
Aubin, H ;
Behnia, K ;
Ribault, M ;
Taillefer, L ;
Gagnon, R .
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1997, 104 (01) :175-177
[3]  
Bando H., 1990, Physics and Chemistry of Organic Superconductors. Proceedings of the ISSP International Symposium, P167
[4]   Thermal conductivity of superconducting (TMTSF)(2)ClO4: Evidence for a nodeless gap [J].
Belin, S ;
Behnia, K .
PHYSICAL REVIEW LETTERS, 1997, 79 (11) :2125-2128
[5]  
BELIN S, IN PRESS
[6]   EVIDENCE FOR RAPID SUPPRESSION OF QUASI-PARTICLE SCATTERING BELOW T(C) IN YBA2CU3O7-DELTA [J].
BONN, DA ;
DOSANJH, P ;
LIANG, R ;
HARDY, WN .
PHYSICAL REVIEW LETTERS, 1992, 68 (15) :2390-2393
[7]   LOW-TEMPERATURE MICROWAVE SURFACE IMPEDANCE OF THE CONVENTIONAL ORGANIC SUPERCONDUCTOR KAPPA-(BEDT-TTF)2CU(NCS)2 [J].
DRESSEL, M ;
BRUDER, S ;
GRUNER, G ;
CARLSON, KD ;
WANG, HH ;
WILLIAMS, JM .
PHYSICAL REVIEW B, 1993, 48 (13) :9906-9909
[8]  
GOODRICH RG, 1990, MATER RES SOC SYMP P, V173, P125
[9]   Electronic thermal conductivity and the Wiedemann-Franz law for unconventional superconductors [J].
Graf, MJ ;
Yip, SK ;
Sauls, JA ;
Rainer, D .
PHYSICAL REVIEW B, 1996, 53 (22) :15147-15161
[10]  
KRISHANA K, 1995, PHYS REV LETT, V75, P483