In this paper are presented theoretical calculations of the linewidth of the Rayleigh phonon propagating along high symmetry directions of the (111) surfrace of Aluminium both for different temperatures and for different values of the phonon momentum. The interatomic potential pf the crystal contains both a harmonic part which describes the normal vibrations of the crystal and a cubic part which is the dominant term of the lifetimes of the vibrations. The calculations show a rapid decay when either the temperature of the momentum transfer decrease, and a large anisotropy with the direction od the momentum transfer.

Surface Phonon Linewidth / Franchini, Anna. - STAMPA. - (1993), pp. 39-48. (Intervento presentato al convegno Working Party on Inelastic energy transfer and Interactions with surfaces and adsorbates tenutosi a Trieste (Italy) nel 31 agosto - 11 settembre 1992).

Surface Phonon Linewidth

FRANCHINI, Anna
1993

Abstract

In this paper are presented theoretical calculations of the linewidth of the Rayleigh phonon propagating along high symmetry directions of the (111) surfrace of Aluminium both for different temperatures and for different values of the phonon momentum. The interatomic potential pf the crystal contains both a harmonic part which describes the normal vibrations of the crystal and a cubic part which is the dominant term of the lifetimes of the vibrations. The calculations show a rapid decay when either the temperature of the momentum transfer decrease, and a large anisotropy with the direction od the momentum transfer.
1993
Working Party on Inelastic energy transfer and Interactions with surfaces and adsorbates
Trieste (Italy)
31 agosto - 11 settembre 1992
39
48
Franchini, Anna
Surface Phonon Linewidth / Franchini, Anna. - STAMPA. - (1993), pp. 39-48. (Intervento presentato al convegno Working Party on Inelastic energy transfer and Interactions with surfaces and adsorbates tenutosi a Trieste (Italy) nel 31 agosto - 11 settembre 1992).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/464857
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