Superconductor-to-Normal Phase Transition in a Vortex Glass Model: Numerical Evidence for a New Percolation Universality Class

Details Superconductor-to-Normal Phase Transition in a Vortex Glass Model: Numerical Evidence for a New Percolation Universality Class Superconductor-to-Normal Phase Transition in a Vortex Glass Model: Numerical Evidence for a New Percolation Universality Class

2001-10-08

arxiv.org/abs/cond-mat/0110145v1

J. Phys. C Condensed Matter 14, 2361 (2002)

Physics

Condensed Matter

Disordered Systems and Neural Networks

11 pages LaTeX using IOPART.cls, 11 eps-figures included

Scientific paper

10.1088/0953-8984/14/9/325

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.

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