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
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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