Superconducting Coherence and the Helicity Modulus in Vortex Line Models
Superconductivity
2009-10-31 v1 Soft Condensed Matter
Abstract
We show how commonly used models for vortex lines in three dimensional superconductors can be modified to include k=0 excitations. We construct a formula for the k=0 helicity modulus in terms of fluctuations in the projected area of vortex loops. This gives a convenient criterion for the presence of superconducting coherence. We also present Monte Carlo simulations of a continuum vortex line model for the melting of the Abrikosov vortex lattice in pure YBCO.
Cite
@article{arxiv.cond-mat/9812343,
title = {Superconducting Coherence and the Helicity Modulus in Vortex Line Models},
author = {Jack Lidmar and Mats Wallin},
journal= {arXiv preprint arXiv:cond-mat/9812343},
year = {2009}
}
Comments
4 pages RevTeX, 2 eps figures included using epsf