✦ LIBER ✦

Geometric analysis of surface resonance conditions in reflection high energy electron diffraction

✍ Scribed by Peng, L. M. ;Cowley, J. M.

Publisher: Wiley (John Wiley & Sons)
Year: 1987
Tongue: English
Weight: 980 KB
Volume: 6
Category: Article
ISSN: 0741-0581
DOI: 10.1002/jemt.1060060107

No coin nor oath required. For personal study only.

✦ Synopsis

A three-dimensional analysis in reciprocal space is used to analyse reflection high energy electron diffraction (RHEED) patterns. Particular emphasis is placed on investigating the surface resonance phenomenon, the resonance conditions, and the diffraction mechanisms. The surface resonance regions defined by the resonance beam threshold conditions are related to the limits for the specular reflection spot in the diffraction pattern. The introduction of an Ewald sphere of varying radius is shown to be useful in understanding the surface phenomenon. Simulations based on the geometric theory, taking account of the surface refraction effect, describe very well the RHEED pattern geometry from the (111) surface of a platinum single crystal.

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