Direct observation of wave-function variation outside a solid surface

Homer D. Hagstrum, Toshio Sakurai

    Research output: Contribution to journalArticlepeer-review


    In an extension of its capabilities, ion-neutralization spectroscopy is used to determine transition density functions corresponding to ion neutralization at different ion positions. This provides the first direct measurement of the relative variation in the local density of states outside a solid surface. It is shown that the d orbitals of Hg adsorbed on Si are a minor component of the total wave function at the ion position and decay more rapidly with distance outside the solid than does the Si p component.

    Original languageEnglish
    Pages (from-to)615-618
    Number of pages4
    JournalPhysical Review Letters
    Issue number10
    Publication statusPublished - 1976

    ASJC Scopus subject areas

    • Physics and Astronomy(all)


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