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, Jonas Weissenrieder, M. Schmid, P. Varga, N. Kasper, X. Torrelles, S. Ferrer, F. Mittendorfer, G. Kresse

Research output: Contribution to journalArticlepeer-review

70 Citations (SciVal)

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 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.
Original languageEnglish
Article number035401
JournalPhysical Review B (Condensed Matter and Materials Physics)
Volume74
Issue number3
DOIs
Publication statusPublished - 2006

Subject classification (UKÄ)

  • Physical Sciences
  • Natural Sciences
  • Atom and Molecular Physics and Optics

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