title: Coulomb-interaction-induced incomplete shell filling in the hole system of InAs quantum dots.
abstract: We have studied the hole charging spectra of self-assembled InAs quantum dots in perpendicular magnetic fields by capacitance-voltage spectroscopy. From the magnetic-field dependence of the individual peaks we conclude that the s-like ground state is completely filled with two holes but that the fourfold degenerate p shell is only half filled with two holes before the filling of the d shell starts. The resulting six-hole ground state is highly polarized. This incomplete shell filling can be explained by the large influence of the Coulomb interaction in this system.
authors.affiliation: Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität Bochum, D-44799 Bochum, Germany.
authors.forename: D
authors.initials: D
authors.lastname: Reuter
authors.forename: P
authors.initials: P
authors.lastname: Kailuweit
authors.forename: A D
authors.initials: AD
authors.lastname: Wieck
authors.forename: U
authors.initials: U
authors.lastname: Zeitler
authors.forename: O
authors.initials: O
authors.lastname: Wibbelhoff
authors.forename: C
authors.initials: C
authors.lastname: Meier
authors.forename: A
authors.initials: A
authors.lastname: Lorke
authors.forename: J C
authors.initials: JC
authors.lastname: Maan