Monte Carlo simulations of a disordered superconductor-metal quantum phase transition

Autor:	Ibrahim, Ahmed K., Vojta, Thomas
Rok vydání:	2018
Předmět:	Condensed Matter - Strongly Correlated Electrons Condensed Matter - Disordered Systems and Neural Networks Condensed Matter - Superconductivity
Zdroj:	Eur. Phys. J. B 91, 311 (2018)
Druh dokumentu:	Working Paper
DOI:	10.1140/epjb/e2018-90497-5
Popis:	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. Comment: 9 pages, 9 figures included, final version as published
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1808.00094 Zobrazit plný text záznamu View this record from Arxiv