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Volumn 53, Issue 23, 1996, Pages 15997-16005

Formation of (n×1)-O/Ag(110) overlayers and the role of step-edge atoms

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EID: 0001645079     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.53.15997     Document Type: Article
Times cited : (48)

References (27)
  • 7
    • 0026818781 scopus 로고
    • These variations, previously reported by M. Taniguchi, K. I. Tanaka, T. Hashizume and T. Sakurai, Surf. Sci. Lett. 262, L123 (1992), have been described as a "phase coexistence." Strictly speaking, the size of the "domains" (often <20 Å) is too small to support a true thermodynamic phase. Indeed, slight variations in coverage from the ideal phase [e.g., 0.22 ML for the (4×1)-O phase] force local variations in O chain densities.
    • (1992) Surf. Sci. Lett. , vol.262 , pp. L123
    • Taniguchi, M.1    Tanaka, K.2    Hashizume, T.3    Sakurai, T.4
  • 15
    • 0009653461 scopus 로고
    • A low-energy ion scattering experiment indicated the oxygen atoms sit below the top Ag layer by 0.03 Å [M. Canepa, P. Cantini, F. Fossa, L. Mattera and S. Terreni, Phys. Rev. B 47, 15t823 (1993)] instead. Recent STM measurements of O/Ag(110) by I. Stensgaard, E. Lægsgaard, and F. Besenbacher [J. Chem. Phys. 103, 9825 (1995)] argue that Ag atoms, rather than O atoms, are imaged as protrusions with a tungsten tip. We also found occasionally that the oxygen chains appear as dark troughs. This contrast reversal is most likely due to the change of tip characteristics by oxygen adsorption [L. Ruan, F. Besenbacher, I. Stensgaard, and E. Læsgaard, Phys. Rev. Lett. 70, 4079 (1993)]. The actual position of the O atoms remains to be resolved.
    • (1993) Phys. Rev. B , vol.47 , pp. 15823
    • Canepa, M.1    Cantini, P.2    Fossa, F.3    Mattera, L.4    Terreni, S.5
  • 18
    • 2742581264 scopus 로고
    • Jacobsen and Nøskov have calculated the metal-oxygen hybridization energy with the embedded-atom method, finding the hybridization energy increases as the coordination number for the metal atom decreases [K. W. Jacobsen and J. K. Nøskov, Phys. Rev. Lett. 65, 1788 (1990)]. It is then reasonable to expect the mobile Ag adatoms on the terraces are highly reactive during oxidation.
    • (1990) K. W. Jacobsen and J. K. Nøskov, Phys. Rev. Lett. , vol.65 , pp. 1788


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.