Abstract
In this work, the effects of spatial electric field and ratios of dot edge lengths (Lz/L) on the binding energy and polarization of a donor impurity in TQD are presented. Calculations are performed within the effective-mass approximation using the variational procedure and considering an infinite confining potential on all surfaces of the system. The binding energy and polarization are calculated as a function of (Lz/L) ratio. It is found that binding energy and polarization of a donor impurity in TQD depend strongly on the Lz/L ratio, applied spatial electric field strength and impurity position.
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