Addition energy spectrum of a quantum dot disk up to the third shell

D. G. Austing, Y. Tokura, S. Tarucha, P. Matagne, J. P. Leburton

Research output: Contribution to journalArticlepeer-review

Abstract

The 0 T addition energy spectrum for a high quality circular semiconductor quantum dot artificial atom is measured directly from the Coulomb diamonds up to 12 electrons. We focus on the way electrons fill the third shell. Attention is paid in particular to the entry of the first and second electrons to the third shell levels as deduced from the weak magnetic field dependence. The experimental third shell spectrum is then compared to spectra generated from a 3-dimensional density functional calculation, and a modified parabolic potential and constant interaction model.

Original languageEnglish (US)
Pages (from-to)63-67
Number of pages5
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume11
Issue number2-3
DOIs
StatePublished - Oct 2001

Keywords

  • Artificial atoms
  • Hund's rules
  • Quantum dots
  • Shell structure

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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