Anisotropic avalanches and flux penetration in patterned superconductors

D. Gheorghe, M. Menghini, R.J. Wijngaarden, S. Raedts, A. V. Silhanek, V. V. MoshchalkoV

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

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.
Original languageEnglish
Pages (from-to)69-72
Number of pages4
JournalPhysica C. Superconductivity and its Applications
Volume437/438
Early online date25 Jan 2006
DOIs
Publication statusPublished - 15 May 2006

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