MUON-SPIN-RELAXATION MEASUREMENTS OF MAGNETIC PENETRATION DEPTH IN ORGANIC SUPERCONDUCTORS (BEDT-TTF)2-X - X=CU(NCS)2 AND CU[N(CN)2]BR

被引：126
|
作者：
LE, LP
LUKE, GM
STERNLIEB, BJ
WU, WD
UEMURA, YJ
BREWER, JH
RISEMAN, TM
STRONACH, CE
SAITO, G
YAMOCHI, H
WANG, HH
KINI, AM
CARLSON, KD
WILLIAMS, JM
机构：
[1] COLUMBIA UNIV, DEPT PHYS, NEW YORK, NY 10027 USA
[2] UNIV BRITISH COLUMBIA, DEPT PHYS, VANCOUVER V6T 2A3, BC, CANADA
[3] VIRGINIA STATE COLL, DEPT PHYS, PETERSBURG, VA 23803 USA
[4] KYOTO UNIV, DEPT CHEM, KYOTO 606, JAPAN
[5] ARGONNE NATL LAB, DIV CHEM & MAT SCI, ARGONNE, IL 60439 USA
来源：
PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 12期
关键词：
D O I：
10.1103/PhysRevLett.68.1923
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The magnetic-field penetration depth-lambda in the organic superconductors kappa-(BEDT-TTF)2Cu(NCS)2 and kappa-(BEDT-TTF)2Cu[N(CN)2]Br has been measured over a wide temperature region 20 mK less-than-or-equal-to T less-than-or-equal-to 15 K via the muon-spin-relaxation technique. Linear variation of lambda with T at low temperatures, found in both systems, is consistent with anisotropic superconducting pairings with line nodes in the energy gap. In the latter compound, we observe flux depinning at T approximately 5 K, well below T(c) = 12 K.
引用
收藏
页码：1923 / 1926
页数：4
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