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Au/TiO2(110) interfacial reconstruction stability from ab initio

By Min Yu and Dallas R. Trinkle

Abstract

We determine the stability and properties of interfaces of low-index Au surfaces adhered to TiO2(110), using density functional theory energy density calculations. We consider Au(100) and Au(111) epitaxies on rutile TiO2(110) surface, as observed in experiments. For each epitaxy, we consider several different interfaces: Au(111)//TiO2(110) and Au(100)//TiO2(110), with and without bridging oxygen, Au(111) on 1x2 added-row TiO2(110) reconstruction, and Au(111) on a proposed 1x2 TiO reconstruction. The density functional theory energy density method computes the energy changes on each of the atoms while forming the interface, and evaluates the work of adhesion to determine the equilibrium interfacial structure.Comment: 20 pages, 11 figure

Topics: Condensed Matter - Materials Science, Physics - Chemical Physics
Publisher: 'American Chemical Society (ACS)'
Year: 2011
DOI identifier: 10.1021/jp2017133
OAI identifier: oai:arXiv.org:1108.2072

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