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Phonon transmission in III-V semiconductor superlattices and alloys

Antonyuk, Vadim LU ; Larsson, Magnus LU ; Mal'shukov, AG and Chao, Koung-An LU (2005) In Semiconductor Science and Technology 20(5). p.347-352
Abstract
We have used the transfer matrix approach to investigate the LA phonon transmission along the [0 0 1] growth direction in GaAs/GaAlAs superlattices and in Ga1-xAlxAs alloys. Our calculated minigap in the phonon dispersion induced by the zone folding matches reasonably to the phonon filtering experiment. However, in the regime of phonon ballistic transport, we found insignificant effect of zone folding on phonon thermal conductance. On the other hand, the alloy scatterings largely suppress the phonon transmission probability and so lower the phonon thermal conductance of alloys.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Semiconductor Science and Technology
volume
20
issue
5
pages
347 - 352
publisher
IOP Publishing
external identifiers
  • wos:000229797900007
  • scopus:24144470793
ISSN
0268-1242
DOI
10.1088/0268-1242/20/5/004
language
English
LU publication?
yes
id
16f764ad-831c-485f-87f9-b66d3b64d7cd (old id 235989)
date added to LUP
2007-08-21 12:13:08
date last changed
2017-01-01 07:07:32
@article{16f764ad-831c-485f-87f9-b66d3b64d7cd,
  abstract     = {We have used the transfer matrix approach to investigate the LA phonon transmission along the [0 0 1] growth direction in GaAs/GaAlAs superlattices and in Ga1-xAlxAs alloys. Our calculated minigap in the phonon dispersion induced by the zone folding matches reasonably to the phonon filtering experiment. However, in the regime of phonon ballistic transport, we found insignificant effect of zone folding on phonon thermal conductance. On the other hand, the alloy scatterings largely suppress the phonon transmission probability and so lower the phonon thermal conductance of alloys.},
  author       = {Antonyuk, Vadim and Larsson, Magnus and Mal'shukov, AG and Chao, Koung-An},
  issn         = {0268-1242},
  language     = {eng},
  number       = {5},
  pages        = {347--352},
  publisher    = {IOP Publishing},
  series       = {Semiconductor Science and Technology},
  title        = {Phonon transmission in III-V semiconductor superlattices and alloys},
  url          = {http://dx.doi.org/10.1088/0268-1242/20/5/004},
  volume       = {20},
  year         = {2005},
}