Structural investigation of the ZnSe(001)-c(2×2) surface

W. Weigand, A. Müller, L. Kilian, T. Schallenberg, P. Bach, G. Schmidt, L.W. Molenkamp, O. Bunk, R.L. Johnson, C. Kumpf, E. Umbach

    Research output: Contribution to journalJournal articleResearchpeer-review


    Zinc selenide is a model system for II-VI compound semiconductors. The geometric structure of the clean (001)-c(2x2) surface has recently been the subject of intense debate. We report here a surface x-ray-diffraction study on the ZnSe(001)-c(2x2) surface performed under ultrahigh vacuum using synchrotron radiation which reveals the precise atomic geometry. The results are in excellent agreement with the Zn-vacancy model proposed earlier on the basis of density-functional theory calculations and unequivocally establish the correct equilibrium surface structure.
    Original languageEnglish
    JournalPhysical Review B Condensed Matter
    Issue number24
    Pages (from-to)241314
    Number of pages4
    Publication statusPublished - 2003

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