Transition to an insulating phase induced by attractive interactions in the disordered three-dimensional Hubbard model

2002/03/25 by Bhargavi Srinivasan, Giuliano Benenti, Dima L. Shepelyansky
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum, superfluid, helium dynamics #cond-mat

paper · pdf · doi:10.1103/physrevb.66.172506

published as Phys. Rev. B 66, 172506 (2002) · revtex, 4 pages, 3 figures

arxiv created 2002/03/25 · openalex publication_date 2002/11/13 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

We study numerically the interplay of disorder and attractive interactions for spin-1/2 fermions in the three-dimensional Hubbard model. The results obtained by projector quantum Monte Carlo simulations show that at moderate disorder, increasing the attractive interaction leads to a transition from delocalized superconducting states to the insulating phase of localized pairs. This transition takes place well within the metallic phase of the single-particle Anderson model.

Citations

• Theory of dirty superconductors
• Path integrals in the theory of condensed helium

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• Resonant Pair Exchange and Percolation in the Disordered Hubbard Model
• Spin-selective metal insulator transition in two dimensions
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