Monte Carlo simulations of a disordered superconductor-metal quantum phase transition
arXiv:1808.00094 · doi:10.1140/epjb/e2018-90497-5
Abstract
We investigate the quantum phase transitions of a disordered nanowire from superconducting to metallic behavior by employing extensive Monte Carlo simulations. To this end, we map the quantum action onto a (1+1)-dimensional classical XY model with long-range interactions in imaginary time. We then analyze the finite-size scaling behavior of the order parameter susceptibility, the correlation time, the superfluid density, and the compressibility. We find strong numerical evidence for the critical behavior to be of infinite-randomness type and to belong to the random transverse-field Ising universality class, as predicted by a recent strong disorder renormalization group calculation.
arXiv comment9 pages, 9 figures included, final version as published
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