Adsorption-induced step formation

P. Thostrup, Ebbe Christoffersen, Henrik Qvist Lorensen, Karsten Wedel Jacobsen, Flemming Besenbacher, Jens Kehlet Nørskov

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Abstract

Through an interplay between density functional calculations, Monte Carlo simulations and scanning tunneling microscopy experiments, we show that an intermediate coverage of CO on the Pt(110) surface gives rise to a new rough equilibrium structure with more than 50% step atoms. CO is shown to bind so strongly to low-coordinated Pt atoms that it can break Pt-Pt bonds and spontaneously form steps on the surface. It is argued that adsorption-induced step formation may be a general effect, in particular at high gas pressures and temperatures.
Original languageEnglish
JournalPhysical Review Letters
Volume87
Issue number12
Pages (from-to)126102
ISSN0031-9007
DOIs
Publication statusPublished - 2001

Bibliographical note

Copyright (2001) American Physical Society

Keywords

  • METAL-SURFACES
  • CO CHEMISORPTION
  • PT(110)
  • ENERGY
  • SELF-DIFFUSION

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