Experimental imaging and atomistic modeling of electron and hole quasiparticle wave functions in $\mathrm{In}\mathrm{As}∕\mathrm{Ga}\mathrm{As}$ quantum dots

Experimental imaging and atomistic modeling of electron and hole quasiparticle wave functions in $In As ∕ Ga As$ quantum dots

G. Bester, D. Reuter, Lixin He, A. Zunger, P. Kailuweit, A. D. Wieck, U. Zeitler, J. C. Maan, O. Wibbelhoff, and A. Lorke

Phys. Rev. B 76, 075338 – Published 22 August 2007

Abstract

We present experimental magnetotunneling results and atomistic pseudopotential calculations of quasiparticle electron and hole wave functions of self-assembled $In As ∕ Ga As$ quantum dots. The combination of a predictive theory along with the experimental results allows us to gain direct insight into the quantum states. We monitor the effects of (i) correlations, (ii) atomistic symmetry, and (iii) piezoelectricity on the confined carriers and (iv) observe a peculiar charging sequence of holes that violates the Aufbau principle.