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Single-particle-like states in few-electron quantum dots

Steinebach, Christoph ; Schüller, Christian ; Heitmann, Detlef
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Date of publication of this fulltext: 25 Sep 2009 07:41


Abstract

We investigate theoretically Raman spectra of few-electron quantum dots. Spectra obtained by an exact many-body treatment and by a time-dependent local-density approximation are compared. We show that single-particle-like excitations can be expected for systems with only six electrons. The energies of these excitations are close to the Kohn-Sham level spacings.


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