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Coulomb-interaction induced incomplete shell filling in the hole system of InAs quantum dots

D. Reuter·P. Kailuweit·A. D. Wieck·U. Zeitler·O. S. Wibbelhoff·C. Meier·A. Lorke·J. C. Maan
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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.

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D. Reuter, P. Kailuweit, A. D. Wieck, U. Zeitler, O. S. Wibbelhoff, C. Meier, A. Lorke, J. C. Maan. 2005-01-08. Coulomb-interaction induced incomplete shell filling in the hole system of InAs quantum dots. https://doi.org/10.1103/physrevlett.94.026808

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