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Wigner Molecules in Nanostructures

K. Jauregui·W. Haeusler·B. Kramer·PTB Braunschweig
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Abstract

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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K. Jauregui, W. Haeusler, B. Kramer, PTB Braunschweig. 1993-05-27. Wigner Molecules in Nanostructures. https://doi.org/10.1209/0295-5075%2F24%2F7%2F013

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