• Two-dimensional mesoscopic Wigner crystallization and related issues

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      https://www.ias.ac.in/article/fulltext/pram/058/02/0259-0269

    • Keywords

       

      Two-dimensional metal-insulator transition; Wigner crystallization

    • Abstract

       

      The quantum-classical crossover from the Fermi liquid towards the Wigner solid is numerically revisited using small square lattice models where electrons interact via a Coulomb U/r potential. From exact numerical diagonalizations, one finds that the mesoscopic electron solid is formed in two stages, giving rise to an intriguing solid-liquid regime at intermediate couplings. The roles of a random substrate and of the spin degrees of freedom are investigated. Possible relations with the 2d metal-insulator transition observed in various field effect devices are suggested.

    • Author Affiliations

       

      Jean-Louis Pichard1

      1. Service de Physique de l’Etat Condensé, CEA — Saclay, Gif sur Yvette Cedex - 91191, France
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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