Theoretical investigations of superlattice band structure in the envelopefunction approximation
Abstract
We extend our previous investigations on the band structure of superlattices by applying the envelopefunction approximation to four distinct problems. We calculate the band structure of HgTeCdTe superlattices and show that these materials can be either semiconducting or zerogap semiconductors, i.e., behave exactly like the ternary Hg_{1x}Cd_{x} Te random alloys. We analyze the superlattice dispersion relations in the layer planes (Landau superlattice subbands) and we compare the longitudinal and transverse effective masses of semiconducting InAsGaSb superlattices. We calculate the general equation for the bound states due to aperiodic layers, taking account of the band structure of the host materials. We finally derive the dispersion relations of polytype (ABC or ABCD) superlattices.
 Publication:

Physical Review B
 Pub Date:
 June 1982
 DOI:
 10.1103/PhysRevB.25.7584
 Bibcode:
 1982PhRvB..25.7584B