Ordering of Ag-O chains on the Ag(110) surface

Masahiro Taniguchi, Ken ichi Tanaka, Tomihiro Hashizume, Toshio Sakurai

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    113 Citations (Scopus)


    When the Ag(110) surface is exposed to O2 at room temperature, rapid growth of a linear Ag-O compound was observed on the Ag(110) surface; the growth being parallel with the 〈001〉 direction. With increasing O2 exposure, the Ag-O chains form various ordered arrangements on the Ag(110) surface. The surface exposed to 760 L of O2 is covered with Ag-O chains by making (3 × 1) and (5 × 1) ordered domains, where the (5 × 1) domain is composed of an alternate arrangement of (3 × 1) and (2 × 1) structures. When the Ag(110) surface covered with Ag-O rows in the p(2 × 1) structure was heated to about 500 K in vacuum, the p(2 × 1) overlayer was rearranged to p(4 × 1) structures, where the p(4 × 1) phase is composed of four out-of-phase p(4 × 1) domains. The domain boundaries as well as the boundary of the out-of-phase p(4 × 1 ) structures took necessarily one-dimensional fluctuating structures. The models indicate the existence of energetically degenerate sites for the Ag-O rows at the boundaries, which are responsible for the fluctuation of the boundaries.

    Original languageEnglish
    Pages (from-to)L123-L128
    JournalSurface Science
    Issue number3
    Publication statusPublished - 1992 Feb 15

    ASJC Scopus subject areas

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


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