Effects of the Cu-O chains on the anisotropic penetration depth of YBa2Cu4O8

被引：22
|
作者：
Panagopoulos, C
Tallon, JL
Xiang, T
机构：
[1] Univ Cambridge, Interdisciplinary Res Ctr Superconduct, Cambridge CB3 0HE, England
[2] Ind Res Ltd, Lower Hutt, New Zealand
[3] Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
来源：
PHYSICAL REVIEW B | 1999年 / 59卷 / 10期
关键词：
D O I：
10.1103/PhysRevB.59.R6635
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The temperature, T, dependence of the magnetic penetration depth, lambda, of grain-aligned YBa2Cu4O8 has been measured along the ab plane and c axis. Both lambda(ab)(T) and lambda(c)(T) vary as root T up to similar to 0.4T(c) implying a square-root density of states at low energy. The results are discussed in terms of a proximity model of alternating stacked superconducting and normal layers. [S0163-1829(99)51310-6].
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页码：R6635 / R6638
页数：4
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