We have performed theoretical studies on Raman scattering of GaAs-AlAs superlattices. Both effects of superlattice phonons and electronic structures are included in our calculation. For phonons in superlattices, we used a rigid-ion model that takes into account the long-range Coulomb interaction properly. Combining it with a bond-orbital model for the electronic states in superlattices, we have studied nonresonant Raman scattering of GaAs/AlAs superlattices for both optical phonons and acoustic phonons. For optical phonons, we have considered both z(xy)z{} and z(xx)z{} geometries. Our calculations are compared with the available experimental data with favorable agreement.
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Ren et al. (1993) studied this question.
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