Monte Carlo study of phase transitions and scattering intensities in a model of Au(110)

An anisotropic body-centered solid-on-solid model of the fcc (110) surface of Au is formulated and studied by means of Monte Carlo simulation. The nature of the deconstruction and roughening transitions is investigated. These are found to be distinct, with an Ising deconstruction preceding a Kosterl...

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Bibliographic Details
Published in:Surface science 1992-06, Vol.273 (1), p.237-251
Main Authors: Mazzeo, Giorgio, Jug, Giancarlo, Levi, Andrea C., Tosatti, Erio
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Metals. Metallurgy
Physics
Solid surfaces and solid-solid interfaces
Surface structure and topography
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
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Summary:An anisotropic body-centered solid-on-solid model of the fcc (110) surface of Au is formulated and studied by means of Monte Carlo simulation. The nature of the deconstruction and roughening transitions is investigated. These are found to be distinct, with an Ising deconstruction preceding a Kosterlitz-Thouless roughening as the temperature is raised. Evidence is provided for an intermediate incommensurate disordered flat phase between reconstruction and roughening studied through the evaluation of X-ray and atom scattering intensities. A comparison with recent X-ray scattering data for Au(110) is also provided.
ISSN:0039-6028
1879-2758
DOI:10.1016/0039-6028(92)90289-I