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Anders Mikkelsen. Portrait.

Anders Mikkelsen

Professor

Anders Mikkelsen. Portrait.

High-coverage oxygen structures on Rh(111): Adsorbate repulsion and site preference is not enough

Author

  • L Kohler
  • G Kresse
  • M Schmid
  • Edvin Lundgren
  • Johan Gustafson
  • Anders Mikkelsen
  • Mikael Borg
  • J Yuhara
  • Jesper N Andersen
  • M Marsman
  • P Varga
Show all

Summary, in English

A new O induced structure on Rh(111) displaying a (2root3 x 2root3)R30degrees periodicity with an oxygen coverage of 2/3 has been studied by high resolution core level spectroscopy, scanning tunneling microscopy, and density functional theory. Although O favors fcc hollow sites in all other known phases, it occupies both fcc and hcp sites in this structure, which cannot be explained by pairwise adsorbate repulsion only. Both the (22root3 x 2root3)R30degrees and (2x2)-3O structures also exemplify that density-of-states contrast can lead to oxygen adatoms appearing as protrusions in scanning tunneling microscopy images.

Department/s

  • Synchrotron Radiation Research

Publishing year

2004

Language

English

Publication/Series

Physical Review Letters

Volume

93

Issue

26

Document type

Journal article

Publisher

American Physical Society

Topic

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Other

  • ISSN: 1079-7114