Back to Search
Start Over
Localization of the surface acoustic longitudinal pseudomode of silicon in a buriedSiO2layer
- Source :
- Physical Review B. 50:2027-2030
- Publication Year :
- 1994
- Publisher :
- American Physical Society (APS), 1994.
-
Abstract
- We have measured the Brillouin spectrum in p-p polarization of a bilayer of Si/${\mathrm{SiO}}_{2}$ produced by low-dose oxygen implantation on the Si (001) surface. The spectra show two strong resonances close to the longitudinal threshold of silicon, which are explained by a full calculation of the Brillouin cross section. In particular the resonance below the threshold is a guided mode of the buried layer (${\mathrm{SiO}}_{2}$), which originates from the localization in the layer of the surface longitudinal resonance of the matrix (Si). The theory takes into account in a supported double layer both the ripple and the elasto-optic scattering mechanisms.
Details
- ISSN :
- 10953795 and 01631829
- Volume :
- 50
- Database :
- OpenAIRE
- Journal :
- Physical Review B
- Accession number :
- edsair.doi...........50ca3ab878a7106441994f079c1dc4df