Raman scattering in superlattices: Anisotropy of polar phonons
- 1 January 1980
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 36 (1), 43-45
- https://doi.org/10.1063/1.91309
Abstract
Raman experiments on polar phonons in GaAs‐Ga1−xAlxAs superlattices are reported. Other data from the literature, and its interpretation in terms of folding of the phonon Brillouin zone and scattering from q≠0 phonons induced by electronic zone folding, are discussed. An alternative explanation is presented based on optical anisotropy induced by layering. Numerical results show good agreement with experiment.Keywords
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