Unexpected fourfold symmetry in the resistivity of patterned superconductors -: art. no. 212501

被引：42
|
作者：
Pannetier, M
Wijngaarden, RJ
Floan, I
Rector, J
Dam, B
Griessen, R
Lahl, P
Wördenweber, R
机构：
[1] Vrije Univ Amsterdam, Div Phys & Astron, Fac Sci, NL-1081 HV Amsterdam, Netherlands
[2] Forschungszentrum Julich, ISG, Julich, Germany
来源：
PHYSICAL REVIEW B | 2003年 / 67卷 / 21期
关键词：
D O I：
10.1103/PhysRevB.67.212501
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report the magneto-optical observation of a surprising fourfold symmetry of the flux penetration in a superconducting YBa2Cu3O7-delta thin-film disk containing a square array of antidots, leading to an angular variation of the critical current by a factor of nearly 2. This behavior is explained using a vortex channeling model. Potential applications in superconducting devices are discussed.
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页数：4
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