Density-functional theory of quantum dots in the high magnetic field limit

T. H. Stoof, G. E.W. Bauer

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We study the competition between the exchange and the direct Coulomb interaction near the edge of a quantum dot in a strong magnetic field using the density-functional theory in a local approximation for the exchange-energy functional. We develop a scheme in which it is possible to describe fractional filling in the extreme quantum limit. Exchange plays a significant role in reducing the spatial extent of the compressible edge channel regions obtained from an electrostatic description. The transition from narrow incompressible edge channels to broad compressible strips occurs within a narrow and experimentally accessible range of confinement strengths.

Original languageEnglish
Pages (from-to)349-352
Number of pages4
JournalSolid-State Electronics
Volume40
Issue number1-8
DOIs
Publication statusPublished - 1996 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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