C-13 NMR-STUDIES OF THE NORMAL AND SUPERCONDUCTING STATES OF THE ORGANIC SUPERCONDUCTOR KAPPA-(ET)(2)CU[N(CN)(2)]BR

被引：209
|
作者：
DESOTO, SM
SLICHTER, CP
KINI, AM
WANG, HH
GEISER, U
WILLIAMS, JM
机构：
[1] UNIV ILLINOIS,MAT RES LAB,URBANA,IL 61801
[2] ARGONNE NATL LAB,DIV CHEM & MAT SCI,ARGONNE,IL 60439
来源：
PHYSICAL REVIEW B | 1995年 / 52卷 / 14期
关键词：
D O I：
10.1103/PhysRevB.52.10364
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The authors report C-13 NMR spin-lattice relaxation rates 1/T-1 and Knight shifts K-S in the quasi-two-dimensional organic superconductor kappa-(ET)(2)Cu[N(CN)(2)]Br (T-c=11.6 K), for an aligned single crystal. The normal-state behavior is reminiscent of the high-T-c cuprates, in which antiferromagnetic fluctuations and spin-gap behavior dominate. In the superconducting state, the data rule out the BCS electron-phonon mechanism as the source of the superconductivity, but support an unconventional pairing state with possible nodes in the gap function.
引用
收藏
页码：10364 / 10368
页数：5
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