Electronic structure and dispersion of compensated n-i-p-i superlattices with small period lengths.

A detailed calculation of energy-band structures and dispersion relation of compensated n-i-p-i superlattices with small period lengths is presented. The calculation is based on a multistepfunction approach to the real potential form and the transfer-matrix method. The densities of states of conduction subbands have been calculated. %'e found that the density of states is different for difterent subbands. Some special features of small-period doping superlattices have been explored, and are compared with properties of long-period n-I;p-i compensated doping superlattices as wel1 as GaAs-Al„Ga& „As compositional superlattices.