Intermediate Regime between the Fermi Glass and the Mott Insulator in one Dimension
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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.
5 pages, Latex, uses moriond.sty (included), Contribution to the Proceedings of the Rencontres de Moriond 1999
5 pages, Latex, uses moriond.sty (included), Contribution to the Proceedings of the Rencontres de Moriond 1999