We have measured the tunnelling current through a two-dimensional quantum dot formed at the intersection between two wires. Near the onset, the current-voltage curves display a step-like current structure characteristic of incremental charging of the quantum well controlled by Coulomb blockade. Using a magnetic field, we probe the energy levels within the dot when charged with either one or two electrons. These results are compared to the Darwin-Fock calculation for a parabolic quantum dot.
Nogaret, A., Gompertz, MJ., main, P., Eaves, L., Foster, TJ., Henini, M., & beaumont, S. (1996). Magneto-tunnelling spectroscopy of a quantum dot charged with a few electrons. Surface Science, 361 - 362, 644-647. https://doi.org/10.1016/0039-6028(96)00490-6