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

G. R. Berdiyorov; M. V. Miloševič; F. M. Peeters

doi:10.1209/epl/i2006-10013-1

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

G. R. Berdiyorov^*, M. V. Miloševič, F. M. Peeters

^*Corresponding author for this work

University of Antwerp

Research output: Contribution to journal › Article › peer-review

42 Citations (Scopus)

Abstract

Novel behavior of the critical current density j_c of a regularly perforated superconducting film is found, as a function of applied magnetic field H. Previously pronounced peaks of j_c 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 j_c(H) at the matching fields are transformed into a step-like, behavior.

Original language	English
Pages (from-to)	493-499
Number of pages	7
Journal	Europhysics Letters
Volume	74
Issue number	3
DOIs	https://doi.org/10.1209/epl/i2006-10013-1
Publication status	Published - 1 May 2006
Externally published	Yes

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title = "Superconducting films with antidot arrays - Novel behavior of the critical current",

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.",

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AU - Peeters, F. M.

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N2 - 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.

AB - 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.

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

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