Measurement of the Dispersion Relation for Rayleigh Surface Phonons of LiF(001) by Inelastic Scattering of He Atoms
- 9 February 1981
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 46 (6) , 437-439
- https://doi.org/10.1103/physrevlett.46.437
Abstract
Time-of-flight spectra of low-energy (≈20 me V) He scattered from a LiF(001) crystal along the direction reveal up to five sharp inelastic-scattering maxima. Their scattering angle and flight time determine the frequencies and wave numbers of surface phonons over the entire Brillouin zone. The results agree well with calculations of Rayleigh modes by de Wette and Benedek except near the zone boundary. Further unidentified features are also observed.
Keywords
This publication has 8 references indexed in Scilit:
- Observation of Surface Phonons in Inelastic Scattering of He Atoms from LiF(001) Crystal SurfacesPhysical Review Letters, 1980
- Molecular beam scattering studies of orbiting resonances and the determination of van der Waals potentials for H–Ne, Ar, Kr, and Xe and for H2–Ar, Kr, and XeThe Journal of Chemical Physics, 1979
- Theoretical studies of highly expanded free jets: Influence of quantum effects and a realistic intermolecular potentialThe Journal of Chemical Physics, 1977
- Studies of vibrational surface modes in ionic crystals. I. Detailed shell-model studies for the unrelaxed (001) face of seven crystals having the rocksalt structurePhysical Review B, 1977
- Scattering of Thermal Atoms from Crystal SurfacesEurophysics News, 1977
- The Green function approach to the surface lattice dynamics of ionic crystalsSurface Science, 1976
- On the problem of water adsorption on alkali halide cleavage planes, investigated by secondary ion mass spectroscopySurface Science, 1976
- Van Hove Singularities of the Surface Phonon Density from Inelastic Reflection of AtomsPhysical Review Letters, 1975