Restoration of superconductivity in high parallel magnetic fields in layered superconductors

A. G. Lebed, K. Yamaji

Research output: Contribution to journalArticle

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Abstract

We derive an equation determining the upper critical field Hc2(T) parallel to conducting planes of a layered superconductor from the BCS theory. It extends the descriptions of Hc2(T) within the Ginzburg-Landau-Abrikosov-Gor'kov theory and the Lawrence-Doniach model to the case of strong magnetic fields. From this equation, it follows that orbital effects of an electron motion along an open Fermi surface in a magnetic field start to restore superconductivity at magnetic fields higher than the quasiclassical upper critical field and result in the appearance of a reentrant phase with Tc(H)≃Tc(0). A stability of the reentrant phase against fluctuations is discussed.

Original languageEnglish (US)
Pages (from-to)2697-2700
Number of pages4
JournalPhysical review letters
Volume80
Issue number12
DOIs
StatePublished - Jan 1 1998

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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