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Intermediate liquid-solid regime near the quantum melting of a two dimensional Wigner molecule

Georgios Katomeris·Jean-Louis Pichard
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Abstract

For intermediate values of the Coulomb energy to Fermi energy ratio $r_s$, the ground state of a few spinless fermions confined on a two dimensional torus is the quantum superposition of a floppy Wigner molecule with delocalized vacancies and of a Fermi liquid of intersticial particles. This raises the question of the existence of an unnoticed liquid-solid phase between the Fermi liquid and the Wigner crystal for fermionic systems in two dimensions.

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Georgios Katomeris, Jean-Louis Pichard. 2001-01-10. Intermediate liquid-solid regime near the quantum melting of a two dimensional Wigner molecule. https://arxiv.org/abs/cond-mat/0012213

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