Abstract
We have evaluated the splitting of the acceptor ground state induced by compositional disorder in zincblende semiconductor alloys, by a perturbation method. We show that the splitting is proportional to the quadrupolar moment of the impurity distribution around the acceptor, weighted by the hole probability distribution. We discuss applications of this calculation to exciton bound to N in III–V alloys, and possible consequences for magnetic polarons bound to acceptors in II–VI semimagnetic alloys.
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