Theory of light scattering by longitudinal-acoustic phonons in superlattices

1988 ◽  
Vol 37 (8) ◽  
pp. 4086-4098 ◽  
Author(s):  
Jianjun He ◽  
Bahram Djafari-Rouhani ◽  
Jacques Sapriel
Keyword(s):  
Light Scattering ◽  
Acoustic Phonons ◽  
Longitudinal Acoustic

Propagation of Acoustic Phonons in Amorphous Superlattices

1986 ◽  
Vol 77 ◽  
Author(s):  
P. V. Santos ◽  
L. Ley ◽  
J. Mebert ◽  
J. Koblinger
Keyword(s):  
Raman Spectrum ◽  
Light Scattering ◽  
Dispersion Relation ◽  
Brillouin Zone ◽  
Phonon Dispersion ◽  
Transmission Spectra ◽  
Acoustic Phonons ◽  
Longitudinal Acoustic ◽  
Energy Gaps

ABSTRACTWe have investigated the Raman and the phonon transmission spectra of a-Si:H/a-SiNx:H super lattices. At low wavenumbers, the Raman spectrum shows sharp peaks corresponding to the excitation of modes from the folded branches of the dispersion relation for longitudinal acoustic phonons propagating perpendicular to the layers. Energy gaps in the folded phonon dispersion occur at the center and at the boundary of the mini-Brillouin zone due to the differences in the acoustic impedances of the layers. The size of the lowest gaps was determined by light scattering. The phonon transmission spectra show transmission minima that we attribute to the frequency gaps in the dispersion of transversal acoustic phonons. The position and width of these minima are compared with the dispersion obtained from the Raman data.

Study on light scattering by longitudinal-acoustic phonons in superlattices

1992 ◽  
Vol 12 (1) ◽  
pp. 73-76 ◽  
Author(s):  
Y. Jin ◽  
S.L. Zhang ◽  
Y.L. Fan ◽  
M.R. Yu ◽  
X. Wang ◽  
...  
Keyword(s):  
Light Scattering ◽  
Acoustic Phonons ◽  
Longitudinal Acoustic

Graphene-to-Substrate Energy Transfer through Out-of-Plane Longitudinal Acoustic Phonons

Nano Letters ◽  
2014 ◽  
Vol 14 (3) ◽  
pp. 1317-1323 ◽  
Author(s):  
I-Ju Chen ◽  
Pierre-Adrien Mante ◽  
Cheng-Kai Chang ◽  
Szu-Chi Yang ◽  
Hui-Yuan Chen ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Acoustic Phonons ◽  
Longitudinal Acoustic ◽  
Out Of Plane

Scattering of longitudinal acoustic phonons in thin silicon membranes

2017 ◽  
Author(s):  
Dhruv Gelda ◽  
Marc G. Ghossoub ◽  
Krishna V. Valavala ◽  
Manjunath C. Rajagopal ◽  
Sanjiv Sinha
Keyword(s):  
Acoustic Phonons ◽  
Longitudinal Acoustic ◽  
Thin Silicon ◽  
Silicon Membranes

scholarly journals Coherent Zone-Folded Longitudinal Acoustic Phonons in Semiconductor Superlattices: Excitation and Detection

1999 ◽  
Vol 82 (5) ◽  
pp. 1044-1047 ◽  
Author(s):  
Albrecht Bartels ◽  
Thomas Dekorsy ◽  
Heinrich Kurz ◽  
Klaus Köhler
Keyword(s):  
Acoustic Phonons ◽  
Semiconductor Superlattices ◽  
Longitudinal Acoustic

Raman scattering by longitudinal acoustic phonons in metallic W/Ti Fibonacci superlattice

1996 ◽  
Vol 80 (7) ◽  
pp. 4063-4066 ◽  
Author(s):  
F. M. Pan ◽  
G. J. Jin ◽  
X. L. Wu ◽  
J. W. Feng ◽  
A. Hu ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Acoustic Phonons ◽  
Longitudinal Acoustic
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