Mesoscopic Wigner crystallization in two dimensional lattice models
Pichard, Jean-Louis · Katomeris, Georgios · Selva, Franck
Original · EN
The quantum-classical crossover from the Fermi liquid towards the Wigner solid is numerically revisited, considering small square lattice models where electrons interact via a Coulomb U/r potential. The studies of models without disorder and spin and including disorder and spin show that the electron solid is formed in two stages, giving rise to an intriguing solid-liquid regime at intermediate couplings
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