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28 March 2024
 
  » arxiv » cond-mat/0412070

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Stability of the shell structure in 2D quantum dots
M. Aichinger ; E. Rasanen ;
Date 3 Dec 2004
Journal Phys. Rev. B 71, 165302 (2005)
Subject Strongly Correlated Electrons | cond-mat.str-el
AbstractWe study the effects of external impurities on the shell structure in semiconductor quantum dots by using a fast response-function method for solving the Kohn-Sham equations. We perform statistics of the addition energies up to 20 interacting electrons. The results show that the shell structure is generally preserved even if effects of high disorder are clear. The Coulomb interaction and the variation in ground-state spins have a strong effect on the addition-energy distributions, which in the noninteracting single-electron picture correspond to level statistics showing mixtures of Poisson and Wigner forms.
Source arXiv, cond-mat/0412070
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