Re-entrant I-V characteristic in layered superconductors

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

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


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 languageEnglish
Pages (from-to)11243-11246
Number of pages4
JournalPhysical Review B
Issue number17
StatePublished - 1992


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