Synchrotron X-Ray Study of Melting in Submonolayer Ar and other Rare-Gas Films on Graphite

J. P. McTague, Jens Aage Als-Nielsen, Jakob Bohr, Mourits Nielsen

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    Synchrotron x-ray diffraction studies of the (10) peak of Ar on the (001) surface of ZYX graphite show a sharp but continuous broadening of the Bragg peak with increasing temperature. Below a coverage of ∼ 1 Ar atom per six surface carbon atoms (ρ=1) the onset of this transition occurs at a coverage-independent temperature T=47.9 K. We interpret this point as a critical end point for melting. For coverages 0.94
    Original languageEnglish
    JournalPhysical Review B
    Issue number12
    Pages (from-to)7765-7772
    Publication statusPublished - 1982

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