Classical Phase Fluctuations in High Temperature Superconductors
Superconductivity
2009-10-31 v1
Abstract
Phase fluctuations of the superconducting order parameter play a larger role in the cuprates than in conventional BCS superconductors because of the low superfluid density of a doped insulator. In this paper, we analyze an XY model of classical phase fluctuations in the high temperature superconductors using a low-temperature expansion and Monte Carlo simulations. In agreement with experiment, the value of the superfluid density at temperature T=0 is a quite robust predictor of Tc, and the evolution of the superfluid density with T, including its T-linear behavior at low temperature, is insensitive to microscopic details.
Cite
@article{arxiv.cond-mat/9902077,
title = {Classical Phase Fluctuations in High Temperature Superconductors},
author = {E. W. Carlson and S. A. Kivelson and V. J. Emery and E. Manousakis},
journal= {arXiv preprint arXiv:cond-mat/9902077},
year = {2009}
}
Comments
4 pages, 1 figure