Nonlinear sliding friction of adsorbed overlayers on disordered substrates

Details Nonlinear sliding friction of adsorbed overlayers on disordered substrates Nonlinear sliding friction of adsorbed overlayers on disordered substrates

2004-01-22

arxiv.org/abs/cond-mat/0401426v1

Phys. Rev. B 69, 125403 (2004)

Physics

Condensed Matter

Materials Science

8 pages, 8 figs, to appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.69.125403

We study the response of an adsorbed monolayer on a disordered substrate under a driving force using Brownian molecular-dynamics simulation. We find that the sharp longitudinal and transverse depinning transitions with hysteresis still persist in the presence of weak disorder. However, the transitions are smeared out in the strong disorder limit. The theoretical results here provide a natural explanation for the recent data for the depinning transition of Kr films on gold substrate.

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