CALCULATION OF ENERGY SUBBAND STRUCTURES OF CORRUGATED LATERAL-SURFACE SUPERLATTICES BASED ON VARIATIONAL-PRINCIPLES

A theoretical method is developed for calculating energy subbands of c arriers in lateral-surface superlattices with corrugated interfaces (C LSSLs). Based on the variational principle and a coordinate transforma tion, the method overcomes difficulties in constructing wave functions which must satisfy complicated boundary conditions on corrugated inte rfaces. The method is tested numerically via calculations of electron subbands, probability distributions and intersubband optical absorptio ns of CLSSLs with periodic variations of well thicknesses. Sensitive d ependencies of electron subbands, probability distributions and inters ubband optical absorptions on structural parameters of CLSSLs are pred icted.