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    Thermal expansion of the Ag(111) surface measured by x-ray scattering

    Botez, Christian E. (Christian Emil) 1968-
    Elliot, W. C.
    Miceli, Paul F.
    Stephens, P. W.
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    [PDF] ThermalExpansionAg111Surface.pdf (64.78Kb)
    Date
    2001
    Format
    Article
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    Abstract
    We have investigated the structure of the Ag(111) surface, for temperatures between 300 and 1100 K (90% of the bulk melting point), using synchrotron x-ray diffraction. Our data show no evidence of the anomalously large surface thermal expansion previously reported by medium-energy ion-scattering [Phys. Rev. Lett. 72, 3574 (1994)]. At all temperatures we find that the interlayer separations at the surface differ from their bulk counterparts by less than 1%, indicating that the surface expands similarly to the underlying bulk crystal. This behavior is in good agreement with results from molecular dynamics simulations.
    URI
    http://hdl.handle.net/10355/7472
    Citation
    Phys. Rev. B 63, 113404 (2001)
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