Gillman, E. S. and Baker, J. and Hernandez, J. J. and Bishop, G. G. and Li, J. A. and Safron, S. A. and Skofronick, J. G. and Bonart, Dietrich and Schröder, Ulrich (1996) Lattice dynamics of ultrathin layers of KBr grown epitaxially on RbCl(001). PHYSICAL REVIEW B, 53 (20). pp. 13891-13900. ISSN 2469-9950, 2469-9969
Full text not available from this repository.Abstract
High-resolution helium-atom scattering experiments were performed on epitaxially grown layers of KBr on a RbCl(001) substrate for films 1, 2, and 3 ML thick. The layer-by-layer growth was monitored in situ by measuring the intensity of the specularly scattered He beam versus coverage. Measurements of the single-phonon inelastic scattering were carried out on each succeeding layer to determine the surface-phonon dispersion in both the <(Gamma M)over bar> and <(Gamma M)over bar> high-symmetry directions of the surface Brillouin zone. Shell-model potential parameters were determined in a consistent fashion for the four anion-cation constituents at the interface, which gave a good fit to the dispersion curve data from 1-, 2-, and 3-ML KBr/RbCl epitaxially grown systems as reported in this study and, in addition, the bulk and clean surface dispersions of KBr, RbCl, KCl, and RbBr were fit by the same parameters.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | HE-ATOM SCATTERING; PHONON DISPERSION-CURVES; INTER-IONIC POTENTIALS; BORN-MAYER POTENTIALS; ALKALI-HALIDES; RHEED OSCILLATIONS; SURFACE; PARAMETERS; MODES |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 06 Jul 2023 07:04 |
| Last Modified: | 06 Jul 2023 07:04 |
| URI: | https://pred.uni-regensburg.de/id/eprint/51711 |
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