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

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

2004-09-06

arxiv.org/abs/cond-mat/0409125v2

Physics

Condensed Matter

Other Condensed Matter

3 pages, 3 figures

Scientific paper

10.1063/1.1872219

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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