Unusual disordering processes of oxygen overlayers on Rh(110): a combined HAS and LEED study (Articolo in rivista)

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Label
  • Unusual disordering processes of oxygen overlayers on Rh(110): a combined HAS and LEED study (Articolo in rivista) (literal)
Anno
  • 1997-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.55.4717 (literal)
Alternative label
  • H. Over, S. Schwegmann, D. Cvetko, V. De Renzi, L. Floreano, R. Gotter, A. Morgante, M. Peloi, and F. Tommasini, S. Zennaro (1997)
    Unusual disordering processes of oxygen overlayers on Rh(110): a combined HAS and LEED study
    in Physical review. B, Condensed matter; The American Physical Society, College Park, MD 20740-3844 (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • H. Over, S. Schwegmann, D. Cvetko, V. De Renzi, L. Floreano, R. Gotter, A. Morgante, M. Peloi, and F. Tommasini, S. Zennaro (literal)
Pagina inizio
  • 4717 (literal)
Pagina fine
  • 4722 (literal)
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  • http://biblioproxy.cnr.it:2204/doi/10.1103/PhysRevB.55.4717 (literal)
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  • 55 (literal)
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  • 6 (literal)
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  • 7 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany Laboratorio Tecnologie Avanzate Superfici e Catalisi, Area di Ricerca, Padriciano 99, I-34012 Trieste, Italy (literal)
Titolo
  • Unusual disordering processes of oxygen overlayers on Rh(110): a combined HAS and LEED study (literal)
Abstract
  • The temperature-dependent behavior of the Rh(111)-(2X2)-10 phase was investigated by He-atom scattering (HAS) and low-energy electron diffraction. The adsorption system undergoes an order-disorder phase transition at T-c=280+/-5 K, with critical exponents found to be consistent with the four-state Potts model. Beyond the phase transition the HAS specular peak intensity exhibits a strong and reversible increase. This finding points toward a reduction of the surface charge-density corrugation induced by the phase transition itself. Around 160 K, hydrogen adsorbed on the Rh(111)-(2X2)-10 surface reacts with oxygen to form water, and drives the overlayer in an out-of-equilibrium condition which is characterized by a dramatic domain-wall proliferation. (literal)
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