Strong anisotropy in the Rayleigh phonon dispersion relation on Pt(111) induced by ap(22) oxygen overlayer
- 15 February 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 41 (6) , 3397-3400
- https://doi.org/10.1103/physrevb.41.3397
Abstract
Inelastic helium scattering has been used to investigate the influence of oxygen adsorbate on the Pt(111) surface phonons. Oxygen adsorbed on a p(2×2) superstructure on Pt(111) was found to induce a clear anisotropy in the Rayleigh phonon dispersion relation. The increased anisotropy is explained by oxygen adsorption at the ‘‘hcp sites’’ of the Pt(111) surface.Keywords
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