Superconductor-Insulator Transition in a Disordered Electronic System

Details Superconductor-Insulator Transition in a Disordered Electronic System Superconductor-Insulator Transition in a Disordered Electronic System

1995-09-07

arxiv.org/abs/cond-mat/9509029v1

Physics

Condensed Matter

PostScript, 4 pages, figures included

Scientific paper

10.1103/PhysRevB.54.R3756

We study an electronic model of a 2D superconductor with onsite randomness using Quantum Monte Carlo simulations. The superfluid density is used to track the destruction of superconductivity in the ground state with increasing disorder. The non-superconducting state is identified as an insulator from the temperature dependence of its d.c. resistivity. The value of $\sigma_{\rm dc}$ at the superconductor-insulator transition appears to be non-universal.

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