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

Ahmed K. Ibrahim and Thomas Vojta ()
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Ahmed K. Ibrahim: Missouri University of Science and Technology
Thomas Vojta: Missouri University of Science and Technology

The European Physical Journal B: Condensed Matter and Complex Systems, 2018, vol. 91, issue 12, 1-9

Abstract: 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. Graphical abstract

Keywords: Solid; State; and; Materials (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (1)

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DOI: 10.1140/epjb/e2018-90497-5

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