Observation of folded acoustic phonons in a porous silicon superlattice

Publisher Website
Google Scholar
Abstract
Porous silicon superlattice was fabricated and its Raman spectra were examined. The clear zone‐folded doublets from longitudinal acoustic phonons were obtained up to fourth order. A similar phenomenon was not observed in ordinary porous silicon. Using the elastic continuum model, we calculated the frequencies of these folded doublets and the obtained results were in excellent agreement with the experimental ones.

This publication has 0 references indexed in Scilit: