SURFACE FACETING ONCu(115)INDUCED BY OXYGEN ADSORPTION

S. Reiter and E. Taglauer
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S. Reiter: Max-Planck-Institut für Plasmaphysik, EURATOM Association, 85748 Garching/Munich, Germany
E. Taglauer: Max-Planck-Institut für Plasmaphysik, EURATOM Association, 85748 Garching/Munich, Germany

Surface Review and Letters (SRL), 1997, vol. 04, issue 06, 1325-1330

Abstract: The cleanCu(115)surface shows the regular step arrangement of a vicinal surface in scanning tunneling microscopy. Upon oxygen adsorption the surface reconstructs completely. For temperatures around 500 K during or after oxygen adsorption, pronounced faceting into (104), (014) and (113) facets is observed. Details of the facet structures are analyzed. The (113) facet exhibits an additional reconstruction which can be described as ac(7×12)superstructure. The development of Cu–O–Cu atomic chains is suggested to be the driving force for the oxygen-induced surface reconstruction. This reconstruction is reversible; oxygen desorption re-establishes the initial (115) structure.

Date: 1997
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DOI: 10.1142/S0218625X97001759

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