One-dimensional Mn nanostructures formed on vicinal Au(1 1 1) surfaces

Susumu Shiraki, Hideki Fujisawa, Masashi Nantoh, Maki Kawai

    Research output: Contribution to journalArticlepeer-review

    18 Citations (Scopus)

    Abstract

    One-dimensional (1D) nanostructures have been fabricated with Mn adatoms on vicinal Au(1 1 1) surfaces and characterized by scanning tunneling microscopy. Dosed Mn atoms are adsorbed at lower corners of {1 1 1} steps, and Mn adlayers grow in a step-flow growth mode on (1 1 1) terraces. Atomic resolution STM images reveal that the 1D Mn adlayers exhibit various superstructures depending on the coverage. At the beginning, Mn adatoms form 1D monatomic rows along the steps showing the same spacing as the Au substrate lattice. Once the second rows are attached, the 1D nanostructures show twofold periodicity. As the coverage is increased, a structural phase transition occurs and a mixture of a 2×1 structure and a √3×√3-R30° structure appears. The growth mechanism is discussed in terms of adsorption energy, surface energy and diffusivity, comparing with the growth of other transition metals.

    Original languageEnglish
    Pages (from-to)243-250
    Number of pages8
    JournalSurface Science
    Volume552
    Issue number1-3
    DOIs
    Publication statusPublished - 2004 Mar 10

    Keywords

    • Gold
    • Growth
    • Manganese
    • Scanning tunneling microscopy
    • Vicinal single crystal surfaces

    ASJC Scopus subject areas

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

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