Spin Droplet Formation in Quantum Dots

M. C. Rogge, E. Räsänen, R. J. Haug

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Abstract

A lateral quantum dot with approx. 50 electrons is analyzed in high perpendicular magnetic fields. In a regime with two Landau levels (LL) in the quantum dot information about the spin structure is gained by investigating the position of Coulomb blockade peaks. A typical zig-zag pattern is observed which is roughly explained with the so called Constant Interaction model. However, only states from LL0 can be approximated with this model, while for LL1 more complex electron-electron interactions must be included. This is done with spin density functional theory calculations. As a result, full spin polarization is found for LL1, the so called spin droplet.

Original languageEnglish
Title of host publicationPHYSICS OF SEMICONDUCTORS: 30TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS
EditorsJ Ihm, H Cheong
Place of PublicationMELVILLE
PublisherAMER INST PHYSICS
Number of pages2
DOIs
Publication statusPublished - 2011
Externally publishedYes
Publication typeA4 Article in conference proceedings
Event30th International Conference on the Physics of Semiconductors (ICPS-30) - Seoul, Finland
Duration: 25 Jul 201030 Jul 2010

Publication series

NameAIP Conference Proceedings
PublisherAMER INST PHYSICS
Volume1399
ISSN (Print)0094-243X

Conference

Conference30th International Conference on the Physics of Semiconductors (ICPS-30)
Country/TerritoryFinland
Period25/07/1030/07/10

Keywords

  • Quantum dots
  • Coulomb blockade
  • single-electron tunneling
  • ADDITION SPECTRUM
  • BLOCKADE
  • COULOMB

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