Abstract
We present detailed investigations of the surface acoustic wave-mediated dissociation of bound and free excitons in a GaAs multiquantum well. The energetic position of the photoluminescence spectrum can be assigned to the single quantum wells of different width and distance from the sample surface. The effect of the piezoelectric field on the efficiency of excition dissociation in the different quantum wells is characterized. For certain experimental conditions bound excitons are converted to free excitons by the surface acoustic wave and possible explanations are described.
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