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A new quantum phase between the Fermi glass and the Wigner crystal in two dimensions

Giuliano Benenti·Xavier Waintal·Jean-Louis Pichard
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Abstract

For intermediate Coulomb energy to Fermi energy ratios $r_s$, spinless fermions in a random potential form a new quantum phase which is nor a Fermi glass, neither a Wigner crystal. Studying small clusters, we show that this phase gives rise to an ordered flow of enhanced persistent currents, for disorder strength and ratios $r_s$ where a metallic phase has been recently observed in two dimensions.

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Giuliano Benenti, Xavier Waintal, Jean-Louis Pichard. 1999-04-07. A new quantum phase between the Fermi glass and the Wigner crystal in two dimensions. https://doi.org/10.1103/physrevlett.83.1826

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