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Infrared absorption and Raman scattering on coupled plasmon--phonon modes in superlattices

L. A. Falkovsky·E. G. Mishchenko
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Abstract

We consider theoretically a superlattice formed by thin conducting layers separated spatially between insulating layers. The dispersion of two coupled phonon-plasmon modes of the system is analyzed by using Maxwell's equations, with the influence of retardation included. Both transmission for the finite plate as well as absorption for the semi-infinite superlattice in the infrared are calculated. Reflectance minima are determined by the longitudinal and transverse phonon frequencies in the insulating layers and by the density-state singularities of the coupled modes. We evaluate also the Raman cross section from the semi-infinite superlattice.

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L. A. Falkovsky, E. G. Mishchenko. 2005-10-28. Infrared absorption and Raman scattering on coupled plasmon--phonon modes in superlattices. https://doi.org/10.1134/s1063776106040169

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