Vergleich von Ramanspektren und Neutronenspektren von Gläsern mit Hilfe einer neuen Theorie der Schwingungsspektren ungeordneter Festkörper

• Applicant: Professorin Dr. Friederike Schmid, since 12/2011
• Subject Area: Theoretical Condensed Matter Physics
• Term: from 2011 to 2012
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 214727566

• Final Report Year: 2013

Final Report Abstract

The objective is the application of a new theory for vibrational spectra and Raman scattering in glasses. The theory of Schirmacher and Schmid is compared with experimental data for fused silica and niobium phosphate glasses with varying concentration. We obtain a consistent quantitative description of the measured Raman and neutron spectra, the results of molecular dynamics simulations, and the statistics of the Pockels constants from the depolarization ratio.