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

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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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Authors and Affiliations

  1. Laboratoire de Physique Quantique, Université Paul Sabatier, 31062 Toulouse Cedex 4, France, , , , , , FR

    B. Srinivasan & D.L. Shepelyansky

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  1. B. Srinivasan
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  2. D.L. Shepelyansky
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Received 2 July 2001

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Srinivasan, B., Shepelyansky, D. Disorder and superconductivity: a new phase of bi-particle localized states. Eur. Phys. J. B 24, 469–473 (2001). https://doi.org/10.1007/s10051-001-8700-7

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  • DOI: https://doi.org/10.1007/s10051-001-8700-7

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