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

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

2001-02-03

arxiv.org/abs/cond-mat/0102055v1

Eur. Phys. J. B v.24 (2001) p.469

Physics

Condensed Matter

revtex, 4 pages, 3 figures

Scientific paper

10.1007/s10051-001-8700-7

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.

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