1999/05/03 by Dietmar Weinmann, Jean-Louis Pichard, Peter Schmitteckert +1
Physics and Astronomy · #cond-mat.str-el #cond-mat.dis-nn #cond-mat.mes-hall
published as in "Quantum Physics at Mesoscopic Scale", ed. by C. Glattli, M. Sanquer, and Tran Thanh Van, p. 69 (EDP Sciences 2000) · 5 pages, Latex, uses moriond.sty (included), Contribution to the Proceedings of the Rencontres de Moriond 1999
arxiv created 1999/05/03 · arxiv updated 2009/11/30
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 -> ∞. 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.