Abstract
Zero-dimensional electron gases (0DEGs) have been fabricated by the strain patterning of a GaAs/AlAs heterojunction using amorphous carbon stressors. We have observed radiative recombination of electrons with both acceptor-bound and strain-confined holes. For our smallest 0DEGs, quantum dot electron levels are clearly resolved. In finite magnetic field we have mapped the evolution of these electron states, from which we estimate the number of electrons per dot to be 15.
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