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Magneto-capacitance probing of the many-particle states in InAs dots

Oliver S. Wibbelhoff·Axel Lorke·Dirk Reuter·Andreas D. Wieck
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Abstract

We use frequency-dependent capacitance-voltage spectroscopy to measure the tunneling probability into self-assembled InAs quantum dots. Using an in-plane magnetic field of variable strength and orientation, we are able to obtain information on the quasi-particle wave functions in momentum space for 1 to 6 electrons per dot. For the lowest two energy states, we find a good agreement with Gaussian functions for a harmonic potential. The high energy orbitals exhibit signatures of anisotropic confinement and correlation effects.

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Oliver S. Wibbelhoff, Axel Lorke, Dirk Reuter, Andreas D. Wieck. 2004-11-25. Magneto-capacitance probing of the many-particle states in InAs dots. https://doi.org/10.1063/1.1872219

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