Superconductor-to-Normal Phase Transition in a Vortex Glass Model: Numerical Evidence for a New Percolation Universality Class
Disordered Systems and Neural Networks
2009-11-07 v1 Superconductivity
Abstract
The three-dimensional strongly screened vortex-glass model is studied numerically using methods from combinatorial optimization. We focus on the effect of disorder strength on the ground state and found the existence of a disorder-driven normal-to-superconducting phase transition. The transition turns out to be a geometrical phase transition with percolating vortex loops in the ground state configuration. We determine the critical exponents and provide evidence for a new universality class of correlated percolation.
Keywords
Cite
@article{arxiv.cond-mat/0110145,
title = {Superconductor-to-Normal Phase Transition in a Vortex Glass Model: Numerical Evidence for a New Percolation Universality Class},
author = {Frank O. Pfeiffer and Heiko Rieger},
journal= {arXiv preprint arXiv:cond-mat/0110145},
year = {2009}
}
Comments
11 pages LaTeX using IOPART.cls, 11 eps-figures included