Oxygen-induced step bunching and faceting of Rh(553): Experiment and ab initio calculations

Johan Gustafson, Andrea Resta, Anders Mikkelsen, Rasmus Westerström, Jesper N. Andersen, Edvin Lundgren, J Weissenrieder, Michael A. Schmid, Peter Varga, N Kasper, Xavier Torrelles, S Ferrer, Florian Mittendorfer, Georg Kresse

    Veröffentlichungen: Beitrag in FachzeitschriftArtikelPeer Reviewed

    Abstract

    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°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. Œ 2006 The American Physical Society.
    OriginalspracheEnglisch
    Aufsatznummer035401
    Seitenumfang7
    FachzeitschriftPhysical Review B
    Jahrgang74
    Ausgabenummer3
    DOIs
    PublikationsstatusVeröffentlicht - 2006

    ÖFOS 2012

    • 1030 Physik, Astronomie

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