It was recently argued that in small quantum dots the electrons could crystallize at much higher densities than in the infinite two-dimensional electron gas. We compare predictions that the onset of spin polarization and the formation of Wigner molecules occurs at a density parameter rs≈4aB∗ to the results of a straight-forward diagonalization of the Hamiltonian matrix.
@article{arxiv.cond-mat/0004093,
title = {On the formation of Wigner molecules in small quantum dots},
author = {S. M. Reimann and M. Koskinen and M. Manninen},
journal= {arXiv preprint arXiv:cond-mat/0004093},
year = {2009}
}