Surface vibrations and (2x1) superstructures on FCC(110) metal surfaces
Abstract
Electron energy loss spectra are presented for a number of adsorbate overlayers which form (2x1) superstructures on the fcc(110) surface of Nickel and Copper. These include (2x1) structures of H, N2, CO, and O. Lattice dynamical slab calculations are used to analyze the vibrational properties observed in the loss spectra which result from symmetry selection rules for dipole activity of the surface phonons. The calculated spectral densities, together with the symmetry selection rules, are used to analyze proposed models for the adsorbate overlayer structures.
- Publication:
-
Unknown
- Pub Date:
- June 1986
- Bibcode:
- 1986svxs.rept.....S
- Keywords:
-
- Adsorption;
- Crystal Structure;
- Electron Diffraction;
- Electron Energy;
- Metal Surfaces;
- Molecular Oscillations;
- Phonons;
- Selection Rules (Nuclear Physics);
- Spectral Energy Distribution;
- Vibration;
- Carbon Monoxide;
- Copper;
- Hydrogen;
- Losses;
- Nickel;
- Nitrogen;
- Oxygen;
- Solid-State Physics