The interference phenomenon involved in the scattering of low-energy electrons from a solid is among the first successful demonstrations of the predictions of modern quantum mechanics. The pioneering experiments were performed by DAVISSON and GERMER in 1925–27 . From the very start, they recognized the potential of using this scattering from the surface region to study geometric positions of surface atoms. Incident electrons in the energy range 10–400 eV penetrate not more than 5–10 Å into the surface region. The wave interference basic to LEED contains an abundance of information about the geometrical configuration of atoms at surfaces.
KeywordsMultiple Scattering Surface Crystallography Atomic Thermal Vibration Modern Quantum Mechanic Thermal Vibration Amplitude
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