77 citations · 225 across the 5 of their papers we have counts for
5 papers
Evidence of anomalous dispersion of the generalized sound velocity in glasses
B. Ruzicka, T. Scopigno, S. Caponi +7
The dynamic structure factor, S(Q,w), of vitreous silica, has been measured by inelastic X-ray scattering in the exchanged wavevector (Q) region Q=4-16.5 nm-1 and up to energies hw…
Low-energy excess of vibrational states in v-SiO2: the role of transverse dynamics
O. Pilla, A. Fontana, J. R. Goncalves +2
The study of the effects of the density variations on the vibrational dynamics in vitreous silica is presented. A detailed analysis of the dynamical structure factor, as well as of…
The nature of the short wavelength excitations in vitreous silica: X-Rays Brillouin scattering study
O. Pilla, A. Cunsolo, A. Fontana +6
The dynamical structure factor (S(Q,E)) of vitreous silica has been measured by Inelastic X-ray Scattering varying the exchanged wavevector (Q) at fixed exchanged energy (E) - an e…
Transitions between metastable states in silica clusters
Claudio Brangian, Oreste Pilla, Gabriele Viliani
Relaxation phenomena in glasses can be related to jump processes between different minima of the potential energy in the configuration space. These transitions play a key role in t…
Low-frequency Raman scattering in model disordered solids: percolators above threshold
O. Pilla, G. Viliani, R. DellAnna +1
The Raman coupling coefficients of site- and bond-percolators at concentration higher than percolation threshold are computed for two scattering mechanisms: Bond Polarizability (BP…