Direct reconstruction of three-dimensional atomic adsorption sites by holographic LEED
- Department of Physics and Laboratory for Surface Studies, University of Wisconsin-Milwaukee, P.O. Box 413, Milwaukee, Wisconsin 53201 (United States)
- Lehrstuhl fur Festkoerperphysik, University of Erlangen-Nuernberg, Staudtstrasse 7, D-91054 Erlangen (Germany)
- Instituto de Ciencia de Materials (CSIC), Universidad Autonoma de Madrid, E-28049 Madrid (Spain)
- Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2BZ (United Kingdom)
We report on the application to measured data of an algorithm for holographic low-energy electron diffraction (LEED), which overcomes the two most important limitations of the technique to date: the {open_quote}{open_quote}searchlight{close_quote}{close_quote} effect, which tends to highlight only atoms forward scattered by the adsorbates, and the distorting effects on diffuse LEED intensities due to possible long-range order among the adsorbates. The only experimental input required is a set of the most reliably measured diffuse LEED patterns from normally incident electrons. The algorithm is applied to a set of 11 measured diffraction patterns from a K/Ni(001) surface. A fully three-dimensional image is reconstructed from these data by compensating for the anisotropy of the reference wave by an appropriate scattered-wave kernel. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 383814
- Journal Information:
- Physical Review, B: Condensed Matter, Vol. 54, Issue 11; Other Information: PBD: Sep 1996
- Country of Publication:
- United States
- Language:
- English
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