Structure determination of the Cu(0 0 1)-c(4 × 4)-Sn surface by low-energy electron diffraction

Hisashi Yoshida, Akinori Okamoto, Seigi Mizuno, Hiroshi Tochihara

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    Abstract

    Low-energy electron diffraction (LEED) have been used to determine the Cu(0 0 1)-c(4 × 4)-Sn structure formed at 300 K. It is demonstrated that a structural model suggested by scanning tunneling microscopy observations is correct: The model consists of one substitutional Sn atom and four Sn adatoms in the unit cell. Optimum parameters of the determined c(4 × 4) structure reveal that Sn adatoms laterally are displaced by 0.30 Å away from ideal fourfold-hollow sites along the 〈100〉 directions. It is proposed that such displacements of the Sn adatoms cause the formation of a network of octagonal rings on Cu(0 0 1). The substitutional Sn atom is located at each center of the octagonal rings. The formation conditions of the network are discussed.

    Original languageEnglish
    Pages (from-to)535-540
    Number of pages6
    JournalSurface Science
    Volume604
    Issue number5-6
    DOIs
    Publication statusPublished - Mar 15 2010

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    All Science Journal Classification (ASJC) codes

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

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