Title
Inelastic Neutron And Low-Frequency Raman Scattering In Niobium-Phosphate Glasses: The Role Of Spatially Fluctuating Elastic And Elasto-Optic Constants
Abstract
We investigate the low-frequency enhancement of vibrational excitations ('boson peak') in niobium-phosphate glasses through the combination of inelastic neutron and polarization-resolved Raman scattering. The spectra of these glasses reveal an enhancement of the vibrational density of states and of the cross section for spontaneous Raman scattering in the frequency range below 150cm- 1. A recent theoretical model that is based on fluctuating elastic and elasto-optic (Pockels) constants provides a unified description of the measured neutron and Raman spectra, including the depolarization ratio. © 2011 IOP Publishing Ltd.
Publication Date
6-29-2011
Publication Title
Journal of Physics Condensed Matter
Volume
23
Issue
25
Number of Pages
-
Document Type
Article
Personal Identifier
scopus
DOI Link
https://doi.org/10.1088/0953-8984/23/25/254212
Copyright Status
Unknown
Socpus ID
79960029985 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/79960029985
STARS Citation
Schulte, A.; Schirmacher, W.; Schmid, B.; and Unruh, T., "Inelastic Neutron And Low-Frequency Raman Scattering In Niobium-Phosphate Glasses: The Role Of Spatially Fluctuating Elastic And Elasto-Optic Constants" (2011). Scopus Export 2010-2014. 2491.
https://stars.library.ucf.edu/scopus2010/2491