Linear sliding friction: on the origin of the microscopic friction for Xe on silver

We have performed a computer simulation study of the force required to slide xenon monolayer and bilayers on a silver surface. With information about the adsorbate-substrate interaction potential deduced from experimental data, we find that for the compressed incommensurate monolayer film the observ...

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Bibliographic Details
Published in:Surface science 1996-12, Vol.367 (3), p.261-275
Main Authors: Persson, B.N.J., Nitzan, A.
Format: Article
Language:English
Subjects:
Applied sciences
Atomistic dynamics
Computer simulations
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Friction
Mechanical and acoustical properties
adhesion
Metals. Metallurgy
Models of non-equilibrium phenomena
Physics
Solid surfaces and solid-solid interfaces
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
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Summary:We have performed a computer simulation study of the force required to slide xenon monolayer and bilayers on a silver surface. With information about the adsorbate-substrate interaction potential deduced from experimental data, we find that for the compressed incommensurate monolayer film the observed sliding friction is very close to the parallel microscopic friction which acts on the individual adsorbates, which is of mainly electronic origin. For the bilayer film a small fraction of the observed sliding friction may arise from internal excitations in the film, and the rest from the direct energy transfer to the substrate via the electronic friction.
ISSN:0039-6028
1879-2758
DOI:10.1016/S0039-6028(96)00814-X