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- 2016
The Nanostructuring of Atomically Flat Ru(0001) upon Oxidation and ReductionDOI: 10.1186/s11671-016-1757-2 Keywords: Ruthenium, Surface, Oxidation, Reduction, Scanning tunneling microscopy Abstract: 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 RuO2/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 RuO2 film by CO or HCl molecules from the gas phase in high-vacuum environment
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