Adsorption distance of S on Ni(001): An electron-energy-loss-spectroscopy cross-section analysis of the Ni(001)-c(2 x 2)S system

Journal Article · Wed Feb 15 04:00:00 EST 1989 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.39.3116· OSTI ID:6485291

Wu, Z Q; Chen, Y; Xu, M L; Tong, S Y; Lehwald, S; Rocca, M; Ibach, H

The inelastic-electron-scattering cross sections of surface and antinode adsorbate-induced bulk phonons are calculated for the Ni(001)-c(2 x 2)S system. The calculated cross sections are sensitive to variations in the incident electron energy, phonon q/sub X/, and the spacing between S and Ni layers. By comparing calculated cross sections with measured electron-energy-loss spectra at different electron energies and phonon q/sub X/ vectors, we determined the S-Ni spacing unambiguously at 1.35 A. An ad hoc non-central-force model was introduced to explain the measured dispersion curves.

• Research Organization: Department of Physics and Laboratory for Surface Studies, University of Wisconsin--Milwaukee, P.O. Box 413, Milwaukee, Wisconsin 53201
• OSTI ID: 6485291
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 39:5; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ADSORPTION
COLLISIONS
CROSS SECTIONS
CRYSTALS
DISPERSION RELATIONS
DISTANCE
ELECTRON COLLISIONS
ELEMENTS
ENERGY DEPENDENCE
ENERGY LOSSES
INELASTIC SCATTERING
INTERATOMIC DISTANCES
LAYERS
LOSSES
LOW TEMPERATURE
METALS
MONOCRYSTALS
NICKEL
NONMETALS
PHONONS
QUASI PARTICLES
SCATTERING
SORPTION
SORPTIVE PROPERTIES
SULFUR
SURFACE PROPERTIES
TRANSITION ELEMENTS