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Disorder-induced enhancement of the persistent current for strongly interacting electrons in one-dimensional rings

Elise Gambetti-Césare·Dietmar Weinmann·Rodolfo A. Jalabert·Philipp Brune
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Abstract

We show that disorder increases the persistent current of a half-filled one-dimensional Hubbard-Anderson ring at strong interaction. This unexpected effect results from a perturbative expansion starting from the strongly interacting Mott insulator ground state. The analytical result is confirmed and extended by numerical calculations.

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Elise Gambetti-Césare, Dietmar Weinmann, Rodolfo A. Jalabert, Philipp Brune. 2002-09-27. Disorder-induced enhancement of the persistent current for strongly interacting electrons in one-dimensional rings. https://doi.org/10.1209/epl%2Fi2002-00328-9

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