Article (Scientific journals)
Anisotropic avalanches and flux penetration in patterned superconductors
Gheorghe, D. G.; Menghini, M.; Wijngaarden, R. J. et al.
2006In Physica C. Superconductivity, 437-38, p. 69-72
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Keywords :
vortex dynamics; periodic pinning; vortex avalanches
Abstract :
[en] Both for a fundamental understanding of the flux penetration process and for technical applications, the role of artificial pinning sites (such as antidots) in superconductors generates a lot of interest. We perform magneto-optical imaging experiments on type-II Pb thin films patterned with square arrays of square antidots and square arrays of rectangular antidots and blind holes. We demonstrate that a square lattice of rectangular antidots can lead to similar anisotropy in flux penetration and critical current as a rectangular lattice of square antidots. In addition we show how thermo-magnetic avalanches can be guided-and hence to a certain extend controlled-by such holes. (c) 2006 Elsevier B.V. All rights reserved.
Disciplines :
Physics
Author, co-author :
Gheorghe, D. G.
Menghini, M.
Wijngaarden, R. J.
Raedts, S.
Silhanek, Alejandro  ;  Katholieke Universiteit Leuven - KUL
MoshchalkoV, V. V.
Language :
English
Title :
Anisotropic avalanches and flux penetration in patterned superconductors
Publication date :
2006
Journal title :
Physica C. Superconductivity
ISSN :
0921-4534
eISSN :
1873-2143
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
437-38
Pages :
69-72
Peer reviewed :
Peer Reviewed verified by ORBi
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