Influence of the degree of disorder of amorphous solids on the intensity of light scattering by acoustic phonons

1998 ◽  
Vol 87 (1) ◽  
pp. 175-178 ◽  
Author(s):  
N. N. Ovsyuk ◽  
V. N. Novikov
Keyword(s):  
Light Scattering ◽  
Amorphous Solids ◽  
Acoustic Phonons

scholarly journals Temperature dependence of Brillouin light scattering spectra of acoustic phonons in silicon

2015 ◽  
Vol 106 (5) ◽  
pp. 051906 ◽  
Author(s):  
Kevin S. Olsson ◽  
Nikita Klimovich ◽  
Kyongmo An ◽  
Sean Sullivan ◽  
Annie Weathers ◽  
...  
Keyword(s):  
Light Scattering ◽  
Temperature Dependence ◽  
Acoustic Phonons ◽  
Brillouin Light Scattering ◽  
Scattering Spectra

Light scattering by acoustic phonons in unhydrogenated and hydrogenated amorphous silicon

1993 ◽  
Vol 164-166 ◽  
pp. 927-930 ◽  
Author(s):  
E. Bustarret ◽  
C. Thomsen ◽  
M. Stutzmann ◽  
A. Asano ◽  
C. Summonte
Keyword(s):  
Light Scattering ◽  
Amorphous Silicon ◽  
Hydrogenated Amorphous Silicon ◽  
Acoustic Phonons ◽  
Hydrogenated Amorphous

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.

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