TITLE

Large acoustic impedance mismatch in CdTe/MgTe nanodevices

AUTHOR(S)
Jusserand, B.; Ghasemi, R.; Dynowska, E.; Wiater, M.; Karczewski, G.; Wojtowicz, T.
PUB. DATE
March 2009
SOURCE
Applied Physics Letters;3/2/2009, Vol. 94 Issue 9, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
From a Raman scattering investigation of folded longitudinal acoustic phonons in zinc-blende CdTe/MgTe superlattices, we demonstrate that this pair of materials displays a large acoustic impedance mismatch Z1/Z2=1.39, which opens promising perspectives for acoustic phonon engineering in semiconductor nanodevices. The determined MgTe sound velocity s=(3.35±0.15)×103 m/s agrees well with ab initio predictions for the same crystalline form.
ACCESSION #
36941024

 

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