Local work function measurement on Cu(111)-Au and Cu(111)-Pd surfaces

Jin Feng Jia, Guo Cai Dong, Li Li Wang, Xu Cun Ma, Qi Kun Xue, Y. Hasegawa, T. Sakurai

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    In this paper, we report the local work function measurements on the Cu(111)-Au, and Cu(111)-Pd surfaces with scanning tunneling microscopy (STM). We successfully observed the local work function difference between the Au/Pd overlayer and the Cu substrate, the decreased work function at the step edges. We also found that the work function of the Pd film is larger than that of the bulk Pd(111). The lower work function at step edges can be explained by the dipole moment formation. It is demonstrated that the local work function measurement by STM is a powerful way to identify different elements with nanometer resolution.

    Original languageEnglish
    Pages (from-to)1523-1527
    Number of pages5
    JournalWuli Xuebao/Acta Physica Sinica
    Volume54
    Issue number4
    Publication statusPublished - 2005 Apr 1

    Keywords

    • Local work function
    • Scanning tunneling microscope
    • Step

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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