Wigner Molecules in Nanostructures

Details Wigner Molecules in Nanostructures Wigner Molecules in Nanostructures

1993-05-27

arxiv.org/abs/cond-mat/9305034v1

Physics

Condensed Matter

10 pages (excl. Figures), Figures available on request LaTeX

Scientific paper

10.1209/0295-5075/24/7/013

The one-- and two-- particle densities of up to four interacting electrons with spin, confined within a quasi one--dimensional ``quantum dot'' are calculated by numerical diagonalization. The transition from a dense homogeneous charge distribution to a dilute localized Wigner--type electron arrangement is investigated. The influence of the long range part of the Coulomb interaction is studied. When the interaction is exponentially cut off the ``crystallized'' Wigner molecule is destroyed in favor of an inhomogeneous charge distribution similar to a charge density wave .

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