T4 site adsorption of Tl atoms in a Si(111)-(1 × 1)-Tl structure, determined by low-energy electron diffraction analysis

Takayuki Noda, Seigi Mizuno, Jinwook Chung, Hiroshi Tochihara

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    43 Citations (Scopus)

    Abstract

    A (1 × 1) structure formed on Si(111)7 × 7 by thallium (Tl) atom deposition and subsequent annealing has been determined by tensor low-energy electron diffraction (LEED) analysis. Six adsorption sites of Tl atoms on a bulk-truncated surface were examined. The on-top site adsorption of Tl, which was previously deduced from scanning tunneling microscopy images and attributed to the monovalent nature of Tl, is excluded in this LEED analysis. It is concluded that the T4 site is the most optimal. Since the surface forms the (1 × 1) periodicity, the T4 site adsorption is highly anomalous among metal deposited Si(111) surfaces.

    Original languageEnglish
    Pages (from-to)L319-L321
    JournalJapanese Journal of Applied Physics
    Volume42
    Issue number3 B
    DOIs
    Publication statusPublished - Mar 15 2003

    All Science Journal Classification (ASJC) codes

    • General Engineering
    • General Physics and Astronomy

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