Electronic structures of nanostructured transition metals on the Au (788) surface

H. Fujisawa, Susumu Shiraki, M. Nantoh, Maki Kawai

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    The electronic structures of nanostructured transition metals (Fe, Co, Ni) grown by step decoration of the Au(788) surface are investigated by normal emission angle-resolved photoemission spectroscopy (ARPES). As the coverage of the transition metals is increased, the intensity of Au 5d valence bands decreases but the peak positions do not change, suggesting that the mixing between Au 5d and 3d of transition metals is negligibly weak. The coverage dependences of ARPES spectra near the Fermi level (EF) for Fe, Co and Ni are discussed and compared with the photoemission results on bulk materials. In the higher coverage regions, we identify the observed 3d peaks near EF as ferromagnetic exchange splitting bands with similar exchange energy to the bulk. In contrast, at lower coverages, the exchange splitting vanishes for Fe and Co and becomes small for Ni. The origins of this behaviour are attributed to atomic volume, structural dimensionality and finite temperature effects.

    Original languageEnglish
    Pages (from-to)124-128
    Number of pages5
    JournalSurface and Interface Analysis
    Volume37
    Issue number2
    DOIs
    Publication statusPublished - 2005 Feb 1

    Keywords

    • Angle-resolved photoemission
    • Cobalt
    • Gold
    • Iron
    • Nickel
    • Self-assembly
    • Vicinal single-crystal surface

    ASJC Scopus subject areas

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

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