We evaluate the surface phonon dispersion relations of Ag(111) within a force constants parametrization of the bulk dynamics. By changing the surface force constants we are able to explain all the salient features appearing in the experimental time of flight spectra. The parallel momentum Q has been considered along the direction [1-10] of the surface Brillouin zone. We show that the peaks of the time of flight spectra are related to the Rayleigh wave, to the pseudo Rayleigh wave and to a new resonance of longitudinal character. A comparison is made with the [11-2] direction.
On the detection of pseudo surface modes in Ag(111) with He-surface scattering / Bortolani, Virginio; Franchini, Anna; Nizzoli, F.; Santoro, Giorgio. - In: SURFACE SCIENCE. - ISSN 0039-6028. - STAMPA. - 152-153:(1985), pp. 811-813. [10.1016/0039-6028(85)90491-1]
On the detection of pseudo surface modes in Ag(111) with He-surface scattering
BORTOLANI, Virginio;FRANCHINI, Anna;SANTORO, Giorgio
1985
Abstract
We evaluate the surface phonon dispersion relations of Ag(111) within a force constants parametrization of the bulk dynamics. By changing the surface force constants we are able to explain all the salient features appearing in the experimental time of flight spectra. The parallel momentum Q has been considered along the direction [1-10] of the surface Brillouin zone. We show that the peaks of the time of flight spectra are related to the Rayleigh wave, to the pseudo Rayleigh wave and to a new resonance of longitudinal character. A comparison is made with the [11-2] direction.
Pubblicazioni consigliate
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris
