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

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

2000-12-12

arxiv.org/abs/cond-mat/0012213v2

Physics

Condensed Matter

Disordered Systems and Neural Networks

minor corrections

Scientific paper

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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