Phonon dispersion of the (22) phase of carbon on the reconstructed Ni(100) surface
- 15 June 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 35 (18), 9510-9519
- https://doi.org/10.1103/physrevb.35.9510
Abstract
The phonon spectrum of the (2×2) phase of carbon corresponding to a saturation coverage of half a monolayer on the reconstructed Ni(100) surface has been investigated along the Γ¯-X¯ direction by electron-energy-loss spectroscopy. Both the dispersion of the adsorbate modes and of various surface resonances and surface phonons are measured along the [110] direction. The experimental data are compared with the results of a lattice-dynamical model calculation with the nickel atoms in the displaced equilibrium positions of the reconstructed surface.Keywords
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