A photoemission study of ultrathin uranium layers on noble metals

Shin Ichi Fujimori, Yasuharu Saito, Takeo Ejima, Noriaki Sato, Takemi Komatsubara, Satoru Kunii, Shoji Suzuki, Shigeru Sato, Takehiko Ishii

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)

    Abstract

    The core levels and valence states of ultrathin uranium layers on gold and nickel substrates have been studied using XPS. Uranium coverage was less than 2.8Å which corresponds to less than one monolayer. The spectral features are very similar to those of intermetallic compounds of uranium and gold or nickel. This indicates intermixing of deposited uranium with the substrates, at room temperature. In both U/Au and U/Ni systems, the main lines of U 4f spectra are quite asymmetric, and exhibit satellites at higher binding energies compared to the main lines. The profiles of the satellites are different in U/Au and U/Ni, reflecting the difference of the hybridization between U 5f and valence electrons of substrates.

    Original languageEnglish
    Pages (from-to)155-158
    Number of pages4
    JournalJournal of Electron Spectroscopy and Related Phenomena
    Volume78
    DOIs
    Publication statusPublished - 1996 May

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Radiation
    • Atomic and Molecular Physics, and Optics
    • Condensed Matter Physics
    • Spectroscopy
    • Physical and Theoretical Chemistry

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