The Nanostructuring of Atomically Flat Ru(0001) upon Oxidation and Reduction

The O/Ru(0001) system is widely studied due to its rich phase variety of various stoichiometry and atomic arrangements, including the formation of a RuO(2)/Ru(0001) oxide layer. Apart from homogeneous ruthenium surfaces in certain oxidation states, also strongly heterogeneous surfaces can exist due...

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Detalles Bibliográficos
Autores principales: Goriachko, A., Over, H.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2016
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5130973/
https://www.ncbi.nlm.nih.gov/pubmed/27905096
http://dx.doi.org/10.1186/s11671-016-1757-2
Descripción
Sumario:The O/Ru(0001) system is widely studied due to its rich phase variety of various stoichiometry and atomic arrangements, including the formation of a RuO(2)/Ru(0001) oxide layer. Apart from homogeneous ruthenium surfaces in certain oxidation states, also strongly heterogeneous surfaces can exist due to oxidation state’s variation at the nanoscale. We report on a scanning tunneling microscopy (STM) study of the nanostructuring of the oxidized Ru(0001) surface as a result of its interaction with molecular oxygen at elevated temperatures and subsequent reduction of a resulting RuO(2) film by CO or HCl molecules from the gas phase in high-vacuum environment.

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