Disorder and superconductivity : a new phase of bi-particle localized states

Abstract

We study the two-dimensional, disordered, attractive Hubbard model by the projector quantum Monte Carlo method and Bogoliubov - de Gennes mean-field theory. Our results for the ground state show the appearance of a new phase with charge localization in the metallic regime of the non-interacting model. Contrary to the common lore, we demonstrate that mean-field theory fails to predict this phase and is unable to describe the correct physical picture in this regime.

arXiv commentrevtex, 4 pages, 3 figures

Cited by in corpus (3)

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• Superinsulator as a phase of bi-particle localized states