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Interactions and Scaling in a Disordered Two-Dimensional Metal

Sudip Chakravarty·Lan Yin·Elihu Abrahams
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Abstract

We show that a non-Fermi liquid state of interacting electrons in two dimensions is stable in the presence of disorder and is a perfect conductor, provided the interactions are sufficiently strong. Otherwise, the disorder leads to localization as in the case of non-interacting electrons. This conclusion is established by examining the replica field theory in the weak disorder limit, but in the presence of arbitrary electron-electron interaction. Thus, a disordered two-dimensional metal is a perfect metal, but not a Fermi liquid.

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Sudip Chakravarty, Lan Yin, Elihu Abrahams. 1997-12-18. Interactions and Scaling in a Disordered Two-Dimensional Metal. https://doi.org/10.1103/physrevb.58.r559

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