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Different numerical simulations of quantum-dot heterostructures derived from experimental results are presented. We extrapolated three-dimensional dot models directly by atomic force microscopy and high-resolution transmission electron microscopy results, and we present electromechanical, continuum k→ · k→, atomistic Tight Binding and optical calculations for these realistic structures, also compared...
We report on a numerical model of quasi-1-D and quasi-0-dimensional semiconductor heterostructures. This model is strictly based on experimental structures of cylindrical nanocolumns of AlGaAs grown by molecular-beam epitaxy in the (1 1 1) direction. The nanocolumns are of 20–50 nm in diameter and 0.5–1 m in length and contain a single GaAs quantum dot of 2 nm in thickness and 15–45 nm in diameter...
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