Re-entrant I-V characteristic in layered superconductors

I. B. Khalfin; V. A. Larkin; B. Ya Shapiro; V. Oboznov

doi:10.1103/physrevb.46.11243

Re-entrant I-V characteristic in layered superconductors

I. B. Khalfin
, V. A. Larkin
, B. Ya Shapiro
, V. Oboznov

Department of Physics - at Bar-Ilan University

Bar-Ilan University

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

4 Scopus citations

Abstract

The pinning of Abrikosov vortices is investigated both theoretically and experimentally in an artificially prepared Cu-Nb layered system. It is shown that large spatial inhomogeneities can pin a large number of vortices in spite of strong intervortex repulsion and that pinning centers can absorb free vortices from the bulk. The important role of a potential barrier for penetration of vortices into the pinning center is shown. This process leads to the restoration of superconducting properties at large external current.

Original language	English
Pages (from-to)	11243-11246
Number of pages	4
Journal	Physical Review B-Condensed Matter
Volume	46
Issue number	17
DOIs	https://doi.org/10.1103/physrevb.46.11243
State	Published - 1992

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AU - Oboznov, V.

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AB - The pinning of Abrikosov vortices is investigated both theoretically and experimentally in an artificially prepared Cu-Nb layered system. It is shown that large spatial inhomogeneities can pin a large number of vortices in spite of strong intervortex repulsion and that pinning centers can absorb free vortices from the bulk. The important role of a potential barrier for penetration of vortices into the pinning center is shown. This process leads to the restoration of superconducting properties at large external current.

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Re-entrant I-V characteristic in layered superconductors

Abstract

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