Addition spectra of quantum dots in strong magnetic fields

S. R.Eric Yang, A. H. MacDonald, M. D. Johnson

Research output: Contribution to journalArticle

197 Citations (Scopus)

Abstract

We consider the magnetic field dependence of the chemical potential for parabolically confined quantum dots in a strong magnetic field. Approximate expressions based on the notion that the size of a dot is determined by a competition between confinement and interaction energies are shown to be consistent with exact diagonalization studies for small quantum dots. Fine structure is present in the magnetic field dependence which cannot be explained without a full many-body description and is associated with ground-state level crossings as a function of confinement strength or Zeeman interaction strength. Some of this fine structure is associated with precursors of the bulk incompressible states responsible for the fractional quantum Hall effect.

Original languageEnglish
Pages (from-to)3194-3197
Number of pages4
JournalPhysical review letters
Volume71
Issue number19
DOIs
Publication statusPublished - 1993

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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