Superconducting films with antidot arrays - Novel behavior of the critical current

Golibjon Berdiyorov, M. V. Miloševič, F. M. Peeters

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35 Citations (Scopus)

Abstract

Novel behavior of the critical current density jc of a regularly perforated superconducting film is found, as a function of applied magnetic field H. Previously pronounced peaks of jc at matching fields were always found to decrease with increasing H. Here we found a reversal of this behavior for particular geometrical parameters of the antidot lattice and/or temperature. This new phenomenon is due to a strong "caging" of interstitial vortices between the pinned ones. We show that this vortex-vortex interaction can be further tailored by an appropriate choice of the superconducting material, described by the Ginzburg-Landau parameter κ. In effective type-I samples we predict that the peaks in jc(H) at the matching fields are transformed into a step-like, behavior.

Original languageEnglish
Pages (from-to)493-499
Number of pages7
JournalEurophysics Letters
Volume74
Issue number3
DOIs
Publication statusPublished - 1 May 2006
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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