CINECA IRIS Institutional Research Information System
IRIS è l’archivio della produzione scientifica della Fondazione Bruno Kessler.
EnglishNew Raman and incoherent neutron scattering data at various temperatures and molecular-dynamic simulations in amorphous silica are compared to obtain the Raman coupling coefficient C(omega) and, in particular, its low-frequency limit. This study indicates that in the omega --> 0 limit C(omega) extrapolates to a non vanishing value, giving important indications on the characteristics of the vibrational modes in disordered materials; in particular our results indicate that even in the limit of very long wavelength the local disorder implies non regular local atomic displacements.
Scheda prodotto non validato
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte di FBK.
| Titolo: | The Raman coupling function in amorphous silica and the nature of the long-wavelength excitations in disordered systems |
| Autori: | |
| Data di pubblicazione: | 1999 |
| Rivista: | |
| Abstract: | New Raman and incoherent neutron scattering data at various temperatures and molecular-dynamic simulations in amorphous silica are compared to obtain the Raman coupling coefficient C(omega) and, in particular, its low-frequency limit. This study indicates that in the omega --> 0 limit C(omega) extrapolates to a non vanishing value, giving important indications on the characteristics of the vibrational modes in disordered materials; in particular our results indicate that even in the limit of very long wavelength the local disorder implies non regular local atomic displacements. |
| Handle: | http://hdl.handle.net/11582/163012 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/11582/163012
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
Copyright © 2021