ITERATIVE IMAGE RECOVERY IN HOLOGRAPHIC LEED

A. Seubert and K. Heinz ()
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A. Seubert: Lehrstuhl für Festkörperphysik, Universität Erlangen-Nürnberg, Staudtstr. 7, D-91058 Erlangen, Germany
K. Heinz: Lehrstuhl für Festkörperphysik, Universität Erlangen-Nürnberg, Staudtstr. 7, D-91058 Erlangen, Germany

Surface Review and Letters (SRL), 2002, vol. 09, issue 03n04, 1413-1423

Abstract: We report that the quality of atomic images reconstructed directly within the framework of holographic low energy electron diffraction can suffer from considerable atomic displacements. These are due to serious disturbances of the holographic object wave which exist when the object owns the same translational symmetry as the arrangement of beam splitters, for example when the latter induce a substrate reconstruction. We propose and test an iterative procedure for reducing these disturbances by a hybrid combination of the holographic reconstruction and some data fitting procedure. A reliable atomic image results after only a few iteration steps.

Keywords: Low energy electron diffraction (LEED); electron holography; 61.14.Hg; 61.14.Nm (search for similar items in EconPapers)
Date: 2002
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DOI: 10.1142/S0218625X02003949

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