Abstract
A simple dynamical approach to the description of the low energy electron diffraction (LEED) intensity is presented using the quantum field methods developed in thin film theories [1, 2, 5]. The scattering amplitude of the electrons scattered by the metallic thin film is expressed in terms of the surface electron density modulated by lattice vibrations of the atoms at the surface.
The influence of the temperature on the thin film dynamics and then on the LEED intensity is treated in pseudoharmonic approximation [4, 5]. The pseudoharmonic approximation brings an essential correction to the temperature behaviour of LEED spectra, and the approximation can be useful to study the change of the lattice parameters of the film, in particular near the surface.
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Stachulec, K. Low energy electron diffraction by thin films. Acta Physica Hungarica 57, 55–68 (1985). https://doi.org/10.1007/BF03155849
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DOI: https://doi.org/10.1007/BF03155849