Intermediate Regime between the Fermi Glass and the Mott Insulator in one Dimension

Dietmar Weinmann; Jean-Louis Pichard; Peter Schmitteckert; Rodolfo A. Jalabert

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Intermediate Regime between the Fermi Glass and the Mott Insulator in one Dimension

Dietmar Weinmann·Jean-Louis Pichard·Peter Schmitteckert·Rodolfo A. Jalabert

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Abstract

We consider the ground state reorganization driven by an increasing nearest neighbor repulsion U for spinless fermions in a strongly disordered ring. When U -> 0, the electrons form a glass with Anderson localized states. At half filling, a regular array of charges (Mott insulator) is pinned by the random substrate when U -> \infty. Between those two insulating limits, we show that there is an intermediate regime where the electron glass becomes more liquid before crystallizing. The liquid-like behavior of the density-density correlation function is accompanied by an enhancement of the persistent current.

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Dietmar Weinmann, Jean-Louis Pichard, Peter Schmitteckert, Rodolfo A. Jalabert. 1999-05-03. Intermediate Regime between the Fermi Glass and the Mott Insulator in one Dimension. https://arxiv.org/abs/cond-mat/9905017

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