Angle-resolved photoemission study of the interaction of oxygen with a Ni(110) surface. I. Adsorption at 80 K

T. Komeda, Y. Sakisaka, M. Onchi, H. Kato, S. Masuda, K. Yagi

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10 Citations (Scopus)

Abstract

Angle-resolved photoemission spectrosocopy utilizing synchrotron radiation has been used to study the adsorption of oxygen on a Ni(110) surface at 80 K. We found (1) initially dissociative chemisorption leading to the formation of disordered NiO and (2) subsequent physisorption of molecular O2 on NiO characterized by photoemission spectra similar to gas phase O2. The physisorbed O2 molecules convert into the dissociated species on standing in vacuum (i.e., a short-lived precursor state), leading to thickening of the oxide. For a c(2×4) atomic oxygen overlayer, no dispersion of the O 2p-derived levels is observed (<0.05 eV).

Original languageEnglish
Pages (from-to)32-44
Number of pages13
JournalSurface Science
Volume188
Issue number1-2
DOIs
Publication statusPublished - 1987 Sep 2
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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