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A new quantum phase 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 different from the Fermi glass and the Wigner crystal. From a numerical study of small clusters, we show that this phase is characterized by an ordered flow of enhanced persistent currents and occurs for $r_s$ values where a metallic phase has been observed in two dimensions.

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Giuliano Benenti, Xavier Waintal, Jean-Louis Pichard. 1999-05-03. A new quantum phase in two dimensions. https://arxiv.org/abs/cond-mat/9905028

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