Nanoscale multilayers in porous silicon for THz phonon engineering

Gazi N Aliev, Paul A Snow

Research output: Contribution to journalArticle

Abstract

A model predicting the frequency of folded longitudinal acoustic phonon modes in porous silicon based superlattices has been developed. The model includes the measured dependence of the acoustic velocity on porosity and the expected effect of acoustic attenuation on the dispersion relation and on line broadening. We predict that folded phonons with low folding index can be observed with the use of Raman spectroscopy in appropriately designed samples.
Original languageEnglish
Pages (from-to)137-142
Number of pages6
JournalMaterials Research Society Symposium Proceedings
Volume1145
DOIs
Publication statusPublished - Dec 2008
Event2008 MRS Fall Meeting, December 1, 2008 - December 5, 2008 - Boston, MA, USA United States
Duration: 1 Dec 2008 → …

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Porous silicon
porous silicon
Multilayers
Acoustics
engineering
acoustic attenuation
Superlattices
Acoustic wave velocity
Phonons
acoustic velocity
folding
superlattices
Raman spectroscopy
phonons
Porosity
porosity
acoustics

Cite this

Nanoscale multilayers in porous silicon for THz phonon engineering. / Aliev, Gazi N; Snow, Paul A.

In: Materials Research Society Symposium Proceedings, Vol. 1145, 12.2008, p. 137-142.

Research output: Contribution to journalArticle

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