Spin and conductance-peak-spacing distributions in large quantum dots: a density-functional theory study.


Journal Article

We use spin-density-functional theory to study the spacing between conductance peaks and the ground-state spin of 2D model quantum dots with up to 200 electrons. Distributions for different ranges of electron number are obtained in both symmetric and asymmetric potentials. The even/odd effect is pronounced for small symmetric dots but vanishes for large asymmetric ones, suggesting substantially stronger interaction effects than expected. The fraction of high-spin ground states is remarkably large.

Full Text

Duke Authors

Cited Authors

  • Jiang, H; Baranger, HU; Yang, W

Published Date

  • January 17, 2003

Published In

Volume / Issue

  • 90 / 2

Start / End Page

  • 026806 -

PubMed ID

  • 12570571

Pubmed Central ID

  • 12570571

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.90.026806


  • eng