Transition to a Superconductor with Insulating Cavities
Superconductivity
2007-05-23 v1
Abstract
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 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.
Keywords
Cite
@article{arxiv.cond-mat/0407599,
title = {Transition to a Superconductor with Insulating Cavities},
author = {Mauro M. Doria and Antonio R. de C. Romaguera},
journal= {arXiv preprint arXiv:cond-mat/0407599},
year = {2007}
}
Comments
7 pages, 4 figures, to be published in Europhysics Letters