The effect of interdiffusion of Al and Ga atoms on confining potential, band structure and electromagnetic radiation absorption coefficient of three-dimensional superlattice, composed of initially spherical GaAs/Ga1−xAlxAs quantum dots was investigated within the framework of the modified Wood–Saxson potential model. It was shown that the interdiffusion led to the disappearance of quantum dots’ spherical symmetry, to the widening of the energy minibands and to the significant decrease in the interband absorption coefficient. The obtained results indicated the opportunity to take into account the interdiffusion in the calculations of different characteristics of superlattices.

Effect of Interdiffusion on Electronic States and Absorption Coefficient of Semiconductor Superlattice of Cubic Symmetry. V.L.A.Aghchegala, V.N.Mughnetsyan, A.A.Kirakosyan: Physica E, 2010, 42[7], 1950-3