title: Excitation spectra of circular, few-electron quantum dots
abstract: Studies of the ground and excited states in semiconductor quantum dots containing 1 to 12 electrons showed that the quantum numbers of the states in the excitation spectra can be identified and compared with exact calculations. A magnetic field induces transitions between the ground and excited states. These transitions were analyzed in terms of crossings between single-particle states, singlet-triplet transitions, spin polarization, and Hund's rule. These impurity-free quantum dots allow "atomic physics" experiments to be performed in magnetic field regimes not accessible for atoms.
authors.affiliation: L. P. Kouwenhoven, T. H. Oosterkamp, M. W. S. Danoesastro, Department of Applied Physics and Delft Institute of MicroElectronics and Submicrontechnology, Delft University of Technology, Post Office Box 5046, 2600 GA Delf.
authors.initials: LP
authors.lastname: Kouwenhoven
authors.initials: TH
authors.lastname: Oosterkamp
authors.initials: MWS
authors.lastname: Danoesastro
authors.initials: M
authors.lastname: Eto
authors.initials: DG
authors.lastname: Austing
authors.initials: T
authors.lastname: Honda
authors.initials: S
authors.lastname: Tarucha