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Quantum dots and quantum dot lattices : Correlations in small quantal systems

Borgh, Magnus LU ; Toreblad, Maria G. LU ; Åberg, S. LU ; Reimann, Stephanie M. LU ; Koskinen, M. and Manninen, Matti (2005) p.143-150
Abstract

Recently, Attaccalite et al. proposed a new expression for the exchange-correlation energy of the two-dimensional electron gas, based on quantum Monte Carlo calculations. We compare this functional with the established expression given by Tanatar and Ceperley for use in density functional calculations. As model systems serve a circular few-electron quantum dot and a square lattice of dots. For single dots, electronic structure calculations are performed using both energy functionals for the self-consistent solution of the Kohn-Sham equations. The results are compared with those of a numerical diagonalization of the many-body Hamiltonian.

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author
; ; ; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Clusters and Nano-Assemblies : Physical and Biological Systems: Richmond, Virginia, U.S.A., 10-13 November, 2003 - Physical and Biological Systems: Richmond, Virginia, U.S.A., 10-13 November, 2003
pages
8 pages
publisher
World Scientific Publishing
external identifiers
  • scopus:84967344397
ISBN
9789812701879
9812563318
9789812563316
DOI
10.1142/9789812701879_0016
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2005 by World Scientific Publishing Co. Pte. Ltd. All rights reserved.
id
09453864-bd25-409a-8910-10b9a4170979
date added to LUP
2025-09-02 14:21:43
date last changed
2025-09-02 15:29:43
@inbook{09453864-bd25-409a-8910-10b9a4170979,
  abstract     = {{<p>Recently, Attaccalite et al. proposed a new expression for the exchange-correlation energy of the two-dimensional electron gas, based on quantum Monte Carlo calculations. We compare this functional with the established expression given by Tanatar and Ceperley for use in density functional calculations. As model systems serve a circular few-electron quantum dot and a square lattice of dots. For single dots, electronic structure calculations are performed using both energy functionals for the self-consistent solution of the Kohn-Sham equations. The results are compared with those of a numerical diagonalization of the many-body Hamiltonian.</p>}},
  author       = {{Borgh, Magnus and Toreblad, Maria G. and Åberg, S. and Reimann, Stephanie M. and Koskinen, M. and Manninen, Matti}},
  booktitle    = {{Clusters and Nano-Assemblies : Physical and Biological Systems: Richmond, Virginia, U.S.A., 10-13 November, 2003}},
  isbn         = {{9789812701879}},
  language     = {{eng}},
  month        = {{01}},
  pages        = {{143--150}},
  publisher    = {{World Scientific Publishing}},
  title        = {{Quantum dots and quantum dot lattices : Correlations in small quantal systems}},
  url          = {{http://dx.doi.org/10.1142/9789812701879_0016}},
  doi          = {{10.1142/9789812701879_0016}},
  year         = {{2005}},
}