title: The Nanostructuring of Atomically Flat Ru(0001) upon Oxidation and Reduction.
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 RuO2film by CO or HCl molecules from the gas phase in high-vacuum environment.
authors.affiliation: Department of Physical Electronics, Taras Shevchenko National University of Kyiv, Glushkova 4G, Kyiv, 03022, Ukraine. andreandy2000@gmail.com.
authors.forename: A
authors.identifier: http://orcid.org/0000-0003-2963-5010
authors.initials: A
authors.lastname: Goriachko
authors.affiliation: Department of Physical Chemistry, Justus Liebig University, Heinrich Buff Ring 17, 35392, Giessen, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Over
keywords: Oxidation; Reduction; Ruthenium; Scanning tunneling microscopy; Surface