Abstract
It is pointed out that, in terms of the successive product of a great number of transfer matrices, the electron subbands and wavefunctions can be solved consistently for type-I or type-II semiconductor systems in which the band edges of conduction bands and valence bands are not flat (oblique lines or curves). As an illustrative example, the author performed a self-consistent calculation of electron subbands and wavefunctions of the Ga1-xAlxAs sawtooth superlattice taking account of the variation in the effective mass of electrons with the concentration of Al.
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