Nonlocality in superconducting metals: an ultra-high precision magnetic penetration depth study

被引：2
|
作者：
Bonalde, I
Yanoff, BD
Salamon, MB
Chia, EEM
机构：
[1] Inst Venezolano Invest Cient, Ctr Fis, Caracas 1020A, Venezuela
[2] GE Co, Schenectady, NY 12301 USA
[3] Univ Illinois, Dept Phys, Urbana, IL 61801 USA
来源：
PHYSICA B-CONDENSED MATTER | 2003年 / 329卷
关键词：
nonlocal; superconductivity; metals; penetration depth;
D O I：
10.1016/S0921-4526(02)02247-0
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
In previous reports the temperature dependence of the penetration depth lambda(T) of some nonlocal superconducting metals has been found to be in disagreement with the behavior expected from the nonlocal BCS theory. Instead, lambda(T) was close to the local BCS prediction. Here we present high-precision measurements of lambda(T) in Al, Cd, and Zn down to 30 mK, which are in excellent agreement with the prediction of the nonlocal BCS electrodynamics without using adjustable parameters. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：1373 / 1374
页数：2
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