Addition Spectra Of Quantum Dots In Strong Magnetic-Fields

    Authors

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

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    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

    Share

    COinS