Title

Addition Spectra Of Quantum Dots In Strong Magnetic-Fields

Authors

Authors

S. R. E. Yang; A. H. Macdonald;M. D. Johnson

Comments

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Abbreviated Journal Title

Phys. Rev. Lett.

Keywords

HALL REGIME; COULOMB ISLAND; OSCILLATIONS; CONDUCTANCE; SPECTROSCOPY; TRANSPORT; Physics, Multidisciplinary

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.

Journal Title

Physical Review Letters

Volume

71

Issue/Number

19

Publication Date

1-1-1993

Document Type

Article

Language

English

First Page

3194

Last Page

3197

WOS Identifier

WOS:A1993MF91400039

ISSN

0031-9007

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