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

Bhargavi Srinivasan; Dima L. Shepelyansky

doi:10.1007/s10051-001-8700-7

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

Bhargavi Srinivasan·Dima L. Shepelyansky

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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.

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Bhargavi Srinivasan, Dima L. Shepelyansky. 2001-02-03. Disorder and superconductivity : a new phase of bi-particle localized states. https://doi.org/10.1007/s10051-001-8700-7

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