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Fractional Quantum Hall Effect States on a Torus show a Liquid Insulator Direct Transition

2008/10/03 by Jaime Montes, Montes, Jaime
Physics and Astronomy · #FOS: Physical sciences #Magnetic properties of thin films #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.mes-hall

paper · pdf · doi:10.48550/arxiv.0810.0726

15 pages in PDF format

openalex publication_date 2008/10/03 · arxiv created 2011/04/28 · arxiv updated 2011/04/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

From the Fractional Quantum Hall Effect States on a torus with filling factor nu = 1/p, p odd, we found that for small values of nu such states describe triangular Wigner crystals which are stable configurations. Therefore, the insulator phase of the two-dimensional electron system can be described with the same wave function that the liquid phase, and the incompressible liquid freezes (or the Wigner crystal melts) without any quantum transition between states, thus the system phase changes by means of a direct transition. We found at least one stable configuration of a Wigner crystal with F = 3 electrons for cell and we investigate the behavior of the crystal when the lengths ratio Ly/Lx changes.

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