Colle-Salvetti-type local density functional for the exchange-correlation energy in two dimensions

S. Sakiroglu, E. Räsänen

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Abstract

We derive an approximate local density functional for the exchange-correlation energy to be used in density-functional calculations of two-dimensional systems. In the derivation we employ the Colle-Salvetti wave function within the scheme of Salvetti and Montagnani [Phys. Rev. A 63, 052109 (2001)] to satisfy the sum rule for the exchange-correlation hole. We apply the functional to the two-dimensional homogeneous electron gas as well as to a set of quantum dots and find a very good agreement with exact reference data.

Original languageEnglish
Article number012505
Number of pages5
JournalPhysical Review A
Volume82
Issue number1
DOIs
Publication statusPublished - 8 Jul 2010
Externally publishedYes
Publication typeA1 Journal article-refereed

Keywords

  • QUANTUM DOTS
  • APPROXIMATE CALCULATION
  • SHELLS

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