Reactivity and deconstruction of the (1x2)-Rh(110) surface studied by scanning tunneling microscopy (Articolo in rivista)

Type
Label
  • Reactivity and deconstruction of the (1x2)-Rh(110) surface studied by scanning tunneling microscopy (Articolo in rivista) (literal)
Anno
  • 2002-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.1465411 (literal)
Alternative label
  • Africh, C (1,2); Esch, F (2); Comelli, G (1,2); Rosei, R (1,2) (2002)
    Reactivity and deconstruction of the (1x2)-Rh(110) surface studied by scanning tunneling microscopy
    in The Journal of chemical physics; American Institute Of Physics (AIP), Melville (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Africh, C (1,2); Esch, F (2); Comelli, G (1,2); Rosei, R (1,2) (literal)
Pagina inizio
  • 7200 (literal)
Pagina fine
  • 7206 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 116 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 16 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopus (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Univ Trieste, Dept Phys, I-34127 Trieste, Italy; (2) INFM, Lab TASC, I-34012 Trieste, Italy (literal)
Titolo
  • Reactivity and deconstruction of the (1x2)-Rh(110) surface studied by scanning tunneling microscopy (literal)
Abstract
  • The titration of a (2x2)p2mg-O/Rh(110) surface by hydrogen and the subsequent deconstruction of the nonequilibrium (1x2) reconstructed surface has been studied by scanning tunneling microscopy (STM) in a temperature range between 380 and 405 K. The titration reaction is seen to occur via reaction fronts, which start at steps, are elongated in the [1 (1) over bar0] direction and leave behind a surface covered by diffusing oxygen atoms. Two deconstruction mechanisms are active: A long-range row pairing of adjacent (1x2) rows, which propagates over several hundreds of Angstrom in the [1 (1) over bar0] direction, and a local hole formation in which Rh atoms detach from the ends of broken [1 (1) over bar0] rows, diffuse over up to 100 Angstrom and condense into (1x1) islands. Both mechanisms lead to the formation of correlated up-down islands; at step edges, the second one leads to a step retraction. The deconstruction is strongly defect mediated and the STM results indicate that the (1x2) reconstructed surface is most probably metastable. (literal)
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