Adsorbate-substrate vibrational coupling in physisorbed Kr films on Pt(111)
- 15 January 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 35 (2) , 886-889
- https://doi.org/10.1103/physrevb.35.886
Abstract
Surface-phonon dispersion curves have been measured by inelastic He scattering for thin Kr films (1,2,3, and 25 monolayers) physisorbed on Pt(111) along the (Γ¯ K¯ azimuth. Phonon hybridization between the localized adlayer modes and the substrate Rayleigh wave is observed in the intersection region. Radiative damping causes a substantial phonon-linewidth broadening over the whole range where the adlayer modes overlap the substrate bulk bands.
Keywords
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