Influence of Surface Plasmon on Kikuchi Pattern in RHEED

Abstract

The Kikuchi pattern gives a lot of information about diffracted waves under different incident conditions, because the pattern forms by inelastic scattered electrons having various directions. By analyzing the intensity of the pattern, information equivalent to the results measured under many incident conditions can be obtained. To analyze the Kikuchi pattern, it is necessary to know the inelastic scattering cross-section. As a first step, we estimated “apparent” inelastic scattering cross-section in the Kikuchi pattern by comparing it with the results of dynamic diffraction intensity calculation. In the formation of the Kikuchi patterns, although phonons and bulk plasmons mainly contribute to the Kikuchi lines, it has been suggested that surface plasmons have a significant influence on the Kikuchi envelope.