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New state of the matter between the Fermi glass and the Wigner crystal in two dimensions

Giuliano Benenti·Xavier Waintal·Jean-Louis Pichard
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Abstract

Spinless fermions with Coulomb interaction in a square disordered lattice form a new state of the matter which is nor a Fermi glass, neither a Wigner crystal for intermediate Coulomb interaction. From a numerical study of small clusters, we find that this new state occurs between the two critical carrier densities where insulator-metal-insulator transitions of a hole gas have been observed in GaAs.

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Giuliano Benenti, Xavier Waintal, Jean-Louis Pichard. 1998-12-21. New state of the matter between the Fermi glass and the Wigner crystal in two dimensions. https://arxiv.org/abs/cond-mat/9812339

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