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Oxygen-induced step bunching and faceting of Rh(553): Experiment and ab initio calculations
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2006 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 74, no 3Article in journal (Refereed) Published
Abstract [en]

Using a combined experimental and theoretical approach, we show that the initial oxidation of a Rh(553) surface, a surface vicinal to (111), undergoes step bunching when exposed to oxygen, forming lower-index facets. At a pressure of about 10(-6) mbar and a temperature of 380 degrees C this leads to (331) facets with one-dimensional oxide chains along the steps, coexisting with (111) facets. Further increase of the pressure and temperature results in (111) facets only, covered by an O-Rh-O surface oxide. Our density functional theory calculations provide an atomistic understanding of the observed behavior.

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2006. Vol. 74, no 3
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Other Physics Topics
URN: urn:nbn:se:kth:diva-49026DOI: 10.1103/PhysRevB.74.035401ISI: 000239426700108ScopusID: 2-s2.0-33745714503OAI: diva2:461336

QC 20111206 QC 20111215

Available from: 2011-12-02 Created: 2011-11-24 Last updated: 2016-09-01Bibliographically approved

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Weissenrieder, Jonas
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