OBSERVATION OF THE CONDUCTIVITY COHERENCE PEAK IN SUPERCONDUCTING BI2SR2CACU2O8 SINGLE-CRYSTALS

被引：72

作者：

HOLCZER, K

FORRO, L

MIHALY, L

GRUNER, G

机构：

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

[2] SUNY STONY BROOK,DEPT PHYS,STONY BROOK,NY 11794

[3] HUNGARIAN ACAD SCI,CENT RES INST PHYS,H-1525 BUDAPEST,HUNGARY

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.67.152

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have measured the surface impedance of Bi2Sr2CaCu2O8 single crystals and have evaluated the conductivity sigma-1 at millimeter-wave frequencies. We observe a peak below T(c) which we suggest is due to case-II coherence factors, like the Hebel-Slichter peak observed in the NMR relaxation rate of classical superconductors. A comparison with theory leads to a large gap, suggesting strong coupling.

引用

页码：152 / 155

页数：4

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