MAGNETIC SCREENING IN PROXIMITY-COUPLED SUPERCONDUCTOR NORMAL-METAL BILAYERS

被引：18
|
作者：
PAMBIANCHI, MS
MAO, J
ANLAGE, SM
机构：
[1] Center for Superconductivity Research, Physics Department, University of Maryland, College Park
来源：
PHYSICAL REVIEW B | 1994年 / 50卷 / 18期
关键词：
D O I：
10.1103/PhysRevB.50.13659
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The electrodynamics of a metallic surface layer in proximity contact to a superconductor are considered. The surface region is modeled as an idealized proximity-coupled superconductor/normal-metal (S/N) bilayer. Analytical expressions for the magnetic-field penetration into the sample are obtained. The behavior of the model and its applicability to magnetic-screening-length measurements on artificial and naturally occurring S/N bilayer superconductors are discussed in various limits. Calculations of the effective penetration depth eff(T) reveal that unconventional penetration depth temperature dependences, such as eff(T)T found in YBa2Cu3O7- crystals, are qualitatively reproduced with this model. © 1994 The American Physical Society.
引用
收藏
页码：13659 / 13663
页数：5
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