Role of the potential in LEED; application to the Na(110) surface
- 14 September 1976
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 9 (17) , 3193-3204
- https://doi.org/10.1088/0022-3719/9/17/014
Abstract
A study of the exchange and correlation component of the one-electron LEED potential was carried out. An analysis of low-energy electron diffraction data from the Na(110) face at T=173K and normal incidence was made to test the different model potentials. A good fit to experimental spectra was obtained with a model based upon Hartree-Fock (core) and Hedin and Lundqvist results for the exchange and correlation potential of a uniform electron gas. The inner potential and absorption are those of a uniform electron gas with the same density as Na (rs=4). The surface layer is determined to be neither contracted nor dilated with respect to the bulk (110) planes.Keywords
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