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- W2057672258 abstract "Abstract We have studied the effect of the interface corrugation on the Raman response of (113), (112), (331) and (012)-oriented AlAs GaAs superlattices. The phonon frequencies and displacements have been calculated using the bond charge model and a supercell approach, and the Raman spectra have been calculated using the bond polarizability model. In (113)-oriented superlattices, the corrugation would give rise to an additional mode coupling and an enhancement of the phonon confinement. The magnitude of these effects and the consequent modifications on the Raman spectra would be quite different for the two interface structures proposed in the literature. For the (112), (331) and (012) superlattices, the modifications induced by the in-plane periodicity would be weak, even in the case of ultrathin superlattices. This is due to the very small height of the interface corrugation and also because the proposed lateral periodicity would not induce any significant mode coupling." @default.
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- W2057672258 date "1996-01-01" @default.
- W2057672258 modified "2023-10-03" @default.
- W2057672258 title "Consequences of interface corrugation on the lattice dynamics and Raman spectra in high-index superlattices" @default.
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- W2057672258 doi "https://doi.org/10.1016/0038-1101(96)84616-8" @default.
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