Transition to a Superconductor with Insulating Cavities
Loading...
Date
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Description
An extreme type II superconductor with internal insulating regions, namely cavities, is studied here. We find that the cavity-bearing superconductor has lower energy than the defect-free superconductor above a critical magnetic induction $B^*$ for insulating cavities but not for metallic ones. Using a numerical approach for the Ginzburg-Landau theory we compute and compare free energy densities for several cavity radii and at least for two cavity densities, assuming a cubic lattice of spherical cavities.
7 pages, 4 figures, to be published in Europhysics Letters
7 pages, 4 figures, to be published in Europhysics Letters