We present calculations of the surface phonon spectra in semiinfinite crystals of Iron and Thungsten,bound by an ideal (001) face,based on a force-constant parametrization of the bulk dynamics. The method allows to treat equally well stongly localized and deeply penetrating atomic vibrations. Local densities of phonon states are shown for the surface and for the first layer underneath,both for the localized modes and for the travelling waves,which are considerably modified by the presence of the surface.
Surface Lattice Dynamics in Semiinfinite Transition Metals / Bortolani, Virginio; F., Nizzoli; Santoro, Giorgio. - STAMPA. - 39:(1978), pp. 326-329. (Intervento presentato al convegno N/A tenutosi a N/A nel N/A).
Surface Lattice Dynamics in Semiinfinite Transition Metals
BORTOLANI, Virginio;SANTORO, Giorgio
1978
Abstract
We present calculations of the surface phonon spectra in semiinfinite crystals of Iron and Thungsten,bound by an ideal (001) face,based on a force-constant parametrization of the bulk dynamics. The method allows to treat equally well stongly localized and deeply penetrating atomic vibrations. Local densities of phonon states are shown for the surface and for the first layer underneath,both for the localized modes and for the travelling waves,which are considerably modified by the presence of the surface.
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