Experimental evidence for Phonon folding in compositional amorphous Superlattices
Hundhausen M, Ley L (1985)
Publication Type: Journal article
Publication year: 1985
Journal
Publisher: Elsevier
Book Volume: 77&78
Pages Range: 1069
DOI: 10.1016/0022-3093(85)90842-7
Abstract
We give experimental evidence for the folding of LA-phonons in a-Si:H/a-SiNx:H compositional superlattices with periods ranging from 60 to 400 Å. We observe two peaks between 5 and 70 cm-1 in the Raman spectra of these samples which we identify with transitions into the second and third branch of the folded longitudinal acoustic phonon dispersion curve. The dispersion of these branches was determined by varying the superlattice period and the laser frequency. The result is well described by a continuum theory that takes the differences in density and sound velocity of a-Si:H and a-SiNx:H into account. © 1985.
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How to cite
APA:
Hundhausen, M., & Ley, L. (1985). Experimental evidence for Phonon folding in compositional amorphous Superlattices. Journal of Non-Crystalline Solids, 77&78, 1069. https://doi.org/10.1016/0022-3093(85)90842-7
MLA:
Hundhausen, Martin, and Lothar Ley. "Experimental evidence for Phonon folding in compositional amorphous Superlattices." Journal of Non-Crystalline Solids 77&78 (1985): 1069.
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