Brillouin spectra from thermally excited surface acoustic phonons in GaAs and Si surfaces coated with a thin Al film are presented. The measurements show features different from the Al and the semiconductor surfaces. We are able to give a theoretical explanation of the experimental results in terms of the coupling between the normal modes of the film and of the substrate.
Brillouin Scattering from Surface Phonons in Al-Coated Semiconductors / Bortolani, Virginio; F., Nizzoli; Santoro, Giorgio; A., Marvin; J. R., Sandercock. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 43:(1979), pp. 224-227. [10.1103/PhysRevLett.43.224]
Brillouin Scattering from Surface Phonons in Al-Coated Semiconductors
BORTOLANI, Virginio;SANTORO, Giorgio;
1979
Abstract
Brillouin spectra from thermally excited surface acoustic phonons in GaAs and Si surfaces coated with a thin Al film are presented. The measurements show features different from the Al and the semiconductor surfaces. We are able to give a theoretical explanation of the experimental results in terms of the coupling between the normal modes of the film and of the substrate.
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