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

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

1999-05-03

arxiv.org/abs/cond-mat/9905017v1

in "Quantum Physics at Mesoscopic Scale", ed. by C. Glattli, M. Sanquer, and Tran Thanh Van, p. 69 (EDP Sciences 2000)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, Latex, uses moriond.sty (included), Contribution to the Proceedings of the Rencontres de Moriond 1999

Scientific paper

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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