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VOLUME 51 (1990) | ISSUE 1 | PAGE 65
Spectrum of low-energy (2-10 meV) vibrational excitations of glasses in a disclination model
It is shown that vibrations localized on linear topological defects in glasses can cause the observed density of vibrational states (DVS), excessive in comparison to the Debye density, in the 2-10 meV energy range. In this approach, the spectra of DVS and of inelastic light scattering by vibrations are obtained in accordance with recent experimental results.