Few-electron quantum dots and disks in zero magnetic field: possible indications on a liquid-solid transition

摘要

Exact-diagonalization studies of few-electron quantum dots and disks are performed. with the aim to investigate a Wigner cluster-Fermi liquid crossover in zero magnetic field at varying strength of Coulomb interaction. A clear indication of a transition of a liquid-solid type in the ground state is found in a more adequate quantum-disk model. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 13]