MUON-SPIN ROTATION (MU-SR) STUDY OF THE TEMPERATURE-DEPENDENCE OF THE LONDON PENETRATION DEPTH IN COPPER-OXIDE SUPERCONDUCTORS

被引：26

作者：

KELLER, H

KUNDIG, W

SAVIC, IM

SIMMLER, H

STAUBLEPUMPIN, B

WARDEN, M

ZECH, D

ZIMMERMANN, P

KALDIS, E

KARPINSKI, J

RUSIECKI, S

BREWER, JH

RISEMAN, TM

SCHNEIDER, JW

MAENO, Y

ROSSEL, C

机构：

[1] SWISS FED INST TECHNOL,FESTKORPERPHYS LAB,CH-8093 ZURICH,SWITZERLAND

[2] UNIV BRITISH COLUMBIA,TRIUMF,VANCOUVER V6T 2A3,BC,CANADA

[3] UNIV BRITISH COLUMBIA,DEPT PHYS,VANCOUVER V6T 2A3,BC,CANADA

[4] IBM RES DIV,ZURICH RES LAB,CH-8803 RUSCHLIKON,SWITZERLAND

来源：

PHYSICA C | 1991年 / 185卷

关键词：

D O I：

10.1016/0921-4534(91)91768-Y

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A mu-SR study of the temperature dependence of the London penetration depth-lambda in sintered samples of YBa2Cu3Ox (with various oxygen contents x), YBa2Cu4O8 and Bi2Sr2CaCu2O8 is presented. It is found that the temperature behavior of lambda of all these cuprate superconductors is consistent with conventional s-wave pairing. However, there are significant differences concerning the exact temperature dependence of lambda in these materials. In YBa2Cu3Ox with high x, the behavior of lambda(T) is well described by the two-fluid model (strong coupling), whereas lambda(T) in YBa2Cu3Ox with low x, YBa2Cu4O8 and Bi2Sr2CaCu2O8 is in better agreement with weak-coupling BCS theory. Possible reasons for the different temperature behavior of lambda in these materials are discussed.

引用

页码：1089 / 1090

页数：2

共 17 条

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