A Study of Electron Scattering from Germanium (100).
Abstract
Low energy electron scattering measurements were made on an atomically clean Ge(100) surface as a function of primary energy, scattering angle and surface order. Analysis of the elastically diffracted electrons indicated the probable existence of a Ge(100) 4X2 surface structure. With appropriate inner potential corrections, most elastic intensity maxima were found to satisfy either kinematical Bragg conditions or secondary Bragg conditions associated with maxima of another beam. Inelastic electron energy distributions displayed numerous characteristic loss peaks due to interband electron excitation in addition to bulk and surface plasmon loss peaks. Measurements of the energy and angular distributions of the inelastic electrons showed the existence of strong inelastic electron diffraction effects. Measurements of the low energy secondary electron energy distributions produced observations of secondary peaks which could be attributed to diffraction of secondary electrons. In addition, secondary peaks were observed which are felt to be due to direct electron emission from local maxima in the conduction band density of states. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1977
- Accession Number
- ADA042189
Entities
People
- Robert Leon Erickson
Organizations
- University of Minnesota