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arXiv · 1012.5992

Interacting lattice electrons with disorder in two dimensions: Numerical evidence for a metal-insulator transition with a universal critical conductivity

Prabuddha B. Chakraborty·Krzysztof Byczuk·Dieter Vollhardt
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Abstract

The dc-conductivity of electrons on a square lattice interacting with a local repulsion in the presence of disorder is computed by means of quantum Monte Carlo simulations. We provide evidence for the existence of a transition from an Anderson insulator to a correlated disordered metal with a universal value of the critical dc-conductivity σ_{dc,crit} = (1.18 \pm 0.06) e^{2}/h at the transition.

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Prabuddha B. Chakraborty, Krzysztof Byczuk, Dieter Vollhardt. 2010-12-29. Interacting lattice electrons with disorder in two dimensions: Numerical evidence for a metal-insulator transition with a universal critical conductivity. https://doi.org/10.1103/physrevb.84.035121

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