Volume 37, Number 8, March II 1997
|Page(s)||565 - 570|
|Section||Condensed matter: structure, thermal and mechanical properties|
|Published online||01 September 2002|
Surface melting and preroughening of argon: An X-ray reflection study
CEA/Département de Recherche Fondamentale sur la Matière Condensée, SI3M/MCI, 38054 Grenoble Cédex 9, France
2 Projekt ANKA, Forschungszentrum Karlsruhe - 76021 Karlsruhe, Germany
3 Fakultät für Physik, Universität Konstanz - 78434 Konstanz, Germany
4 Institut für Experimentalphysik, Christian-Albrechts-Universität zu Kiel, Leibnizstrasse 19, 24118 Kiel, Germany
Accepted: 10 February 1997
We present results of an X-ray reflection study of the surface melting of the dense (111) face of a thick argon film on MgO. Our data show evidence of surface melting through a power law divergence of the thickness of the quasi-liquid surface layer at the triple-point temperature. They also give new direct experimental evidence of preroughening and support the view that the onset of surface melting in these systems is the preroughening transition.
PACS: 68.55Jk – Structure and morphology; thickness / 64.70Dv – Solid-liquid transitions / 68.35Rh – Phase transitions and critical phenomena
© EDP Sciences, 1997
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