Theory of fluctuations in a two-band superconductor
Superconductivity
2009-11-10 v1
Abstract
A theory of fluctuations in two-band superconductor MgB is developed. Since the standard Ginzburg-Landau (GL) approach fails in description of its properties, we generalize it basing on the microscopic theory of a two-band superconductor. Calculating the microscopic fluctuation propagator, we build up the nonlocal two-band GL functional and the corresponding time-dependent GL equations. This allows us to calculate the main fluctuation observables such as fluctuation specific heat and conductivity.
Cite
@article{arxiv.cond-mat/0412746,
title = {Theory of fluctuations in a two-band superconductor},
author = {A. E. Koshelev and A. A. Varlamov and V. M. Vinokur},
journal= {arXiv preprint arXiv:cond-mat/0412746},
year = {2009}
}
Comments
11 pages, 2 figures, subm. to Phys. Rev. B