A detailed investigation of the THz dynamics in glassy SiSe 2 by means of neutron inelastic scattering is presented. To carefully map the translational dynamics and the region of the boson peak, we carried out two different experiments with sharp and broad resolutions coupled with a narrow and a wide kinematic range, respectively. Data show a complex pattern of excitations made up of three components. The most intense one is the prolongation of the longitudinal acoustic mode while two other modes appear in the boson peak region below 3 meV. We propose an interaction model that allows for a consistent identification of the nature of these modes. © 2013 American Chemical Society.

Inelastic neutron scattering investigation in glassy SiSe 2 : Complex dynamics at the atomic scale / Zanatta, M.; Fontana, A.; Orecchini, A.; Petrillo, C.; Sacchetti, F.. - In: THE JOURNAL OF PHYSICAL CHEMISTRY LETTERS. - ISSN 1948-7185. - STAMPA. - 4:7(2013), pp. 1143-1147. [10.1021/jz400232c]

Inelastic neutron scattering investigation in glassy SiSe 2 : Complex dynamics at the atomic scale

Zanatta M.;Fontana A.;
2013-01-01

Abstract

A detailed investigation of the THz dynamics in glassy SiSe 2 by means of neutron inelastic scattering is presented. To carefully map the translational dynamics and the region of the boson peak, we carried out two different experiments with sharp and broad resolutions coupled with a narrow and a wide kinematic range, respectively. Data show a complex pattern of excitations made up of three components. The most intense one is the prolongation of the longitudinal acoustic mode while two other modes appear in the boson peak region below 3 meV. We propose an interaction model that allows for a consistent identification of the nature of these modes. © 2013 American Chemical Society.
2013
7
Zanatta, M.; Fontana, A.; Orecchini, A.; Petrillo, C.; Sacchetti, F.
Inelastic neutron scattering investigation in glassy SiSe 2 : Complex dynamics at the atomic scale / Zanatta, M.; Fontana, A.; Orecchini, A.; Petrillo, C.; Sacchetti, F.. - In: THE JOURNAL OF PHYSICAL CHEMISTRY LETTERS. - ISSN 1948-7185. - STAMPA. - 4:7(2013), pp. 1143-1147. [10.1021/jz400232c]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/239757
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