Characterization of surface and resonance phonons for the Ni(001)-c(2 x 2) system

Journal Article · Wed Jun 15 04:00:00 EDT 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.37.9978· OSTI ID:5256774

Chen, Y; Wu, Z Q; Xu, M L; Tong, S Y; Ho, K; Wang, X

We have analyzed the surface modes and antinode adsorbate-induced bulk modes of the Ni(001)-c(2 x 2)S system. We show that these two classes of phonons contribute to large inelastic electron and/or He-atom scattering cross sections. Three gap modes have been identified for the c(2 x 2) overlayer-covered system and these are compared with the S/sub 6/ gap mode of the clean substrate. Quantitative multiple scattering theory for electron-energy-loss cross sections is shown to be essential for proper interpretation of the dispersion data of so-called resonance features.

• Research Organization: Department of Physics and Laboratory for Surface Studies, University of Wisconsin--Milwaukee, Milwaukee, Wisconsin 53201
• OSTI ID: 5256774
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 37:17; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ATOM COLLISIONS
COATINGS
COLLISIONS
CRYSTAL FACES
ELECTRON SPECTROSCOPY
ELEMENTS
ENERGY-LOSS SPECTROSCOPY
FLUIDS
GASES
HELIUM
LATTICE VIBRATIONS
METALS
NICKEL
NONMETALS
OSCILLATION MODES
PHONONS
QUASI PARTICLES
RARE GASES
SORPTION
SPECTROSCOPY
SULFUR
SURFACE PROPERTIES
TRANSITION ELEMENTS