Density-functional theory of quantum wires and dots in a strong magnetic field

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

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

We study the competition between the exchange and the direct Coulomb interaction near the edge of a two-dimensional electron gas in a strong magnetic field using density-functional theory in a local approximation for the exchange-energy functional. Exchange is shown to play a significant role in reducing the spatial extent of the compressible edge channel regions obtained from an electrostatic description. The transition from the incompressible edge channels of the Hartree-Fock picture to the broad, compressible strips predicted by electrostatics occurs within a narrow and experimentally accessible range of confinement strengths.

Original languageEnglish
Pages (from-to)12143-12152
Number of pages10
JournalPhysical Review B
Volume52
Issue number16
DOIs
Publication statusPublished - 1995
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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