Path to Wigner localization in circular quantum dots

Citation:
Zeng, L, Geist W, Ruan WY, Umrigar CJ, Chou MY.  2009.  Path to Wigner localization in circular quantum dots, Jun. Physical Review B. 79:5., Number 23

Abstract:

Accurate multideterminant ground-state energies of circular quantum dots containing N <= 13 electrons as a function of interaction strength have been evaluated by the diffusion quantum Monte Carlo method. Two unique features are found for these confined two-dimensional systems: (1) as the electron density decreases, the quantum dots favor states with zero orbital angular momentum (L = 0); and (2) for some values of N, the ground state cannot be fully spin-polarized because of a symmetry constraint.

Notes:

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