Maximum-density-droplet formation in hard-wall quantum dots

descriptionPublicationkeyboard_double_arrow_right Article 01 Apr 2004 English Publisher:Elsevier BVJournal:Physica E: Low-dimensional Systems and Nanostructures, volume 22, pages 490-493 (issn: 1386-9477,

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Authors: E. Räsänen; M.J. Puska; R.M. Nieminen;

doi: 10.1016/j.physe.2003.12.052

Maximum-density-droplet formation in hard-wall quantum dots

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Abstract

We study the effects of an external magnetic field on hard-wall quantum dots of various geometries by using the spin-density-functional theory. Starting from the single-electron spectra, we study the role of interactions by examining the spin development as a function of the magnetic field strength. The chemical potentials of the fully polarized states reveal a maximum-density-droplet window in all geometries. The electron density distribution in this regime differs considerably from parabolic dots, showing strong localization due to the dominant Coulomb interaction.

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