Upper critical field in layered superconductors
Abstract
The theoretical statements about a restoration of a superconductivity at magnetic fields higher than the quasiclassical upper critical field and a reentrance of superconductivity at temperatures in the superconductors with open Fermi surfaces are reinvestigated taking into account a scattering of quasiparticles on the impurities. The system of integral equations for determination of the upper critical field parallel to the conducting planes in a layered conventional and unconventional superconductors with impurities are derived. The values for the "clean" case in the Ginzburg-Landau regime and at any temperature in the "dirty" case are found analytically. The upper limit of the superconductor purity when the upper critical field definately has a finite value is established.
Cite
@article{arxiv.cond-mat/0002359,
title = {Upper critical field in layered superconductors},
author = {V. P. Mineev},
journal= {arXiv preprint arXiv:cond-mat/0002359},
year = {2009}
}
Comments
10 pages