Abstract
The few-electron ground states of a strongly asymmetric nanometer-scale As-GaAs double-barrier quantum dot are probed by single-electron tunneling spectroscopy. Magnetotunneling measurements reveal transitions of spin and orbital angular momentum of the two- and three-electron quantum-dot ground states, respectively. The experimental data are compared with exact calculations of the few-electron ground-state energies. Magnetic-field-induced modulations of the tunneling rate in the many-electron regime indicate correlations in the involved states.
- Received 1 December 1994
DOI:https://doi.org/10.1103/PhysRevB.51.5570
©1995 American Physical Society