Threshold effects in LEED: resonance or interference effects?
- 30 May 1982
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 15 (15), 3425-3430
- https://doi.org/10.1088/0022-3719/15/15/014
Abstract
Much work has been done on threshold effects in LEED assuming their resonance origin. The authors use here a perturbation expansion to separate the contributions of interference and resonance effects in LEED profiles. They show, on five typical examples, that oscillations near thresholds have a clear interference origin. It appears that it is difficult to find situations for which resonance conditions are actually satisfied. This fact has important consequences on the information that one can extract from analysis of threshold effects.Keywords
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