Superconductor-Insulator Transition in a Disordered Electronic System
Nandini Trivedi, Richard T. Scalettar, Mohit Randeria
Abstract
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 σ dc at the superconductor-insulator transition appears to be non-universal.
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