Nonlinear sliding friction of adsorbed overlayers on disordered substrates
arXiv:cond-mat/0401426 · doi:10.1103/PhysRevB.69.125403
Abstract
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.
arXiv comment8 pages, 8 figs, to appear in Phys. Rev. B
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- Devil's Staircase and Disordering Transitions in Sliding Vortices and Wigner Crystals on Random Substrates with Transverse Driving
- Switching and Jamming Transistor Effect for Vortex Matter in Honeycomb Pinning Arrays with ac Drives
- Evolution of Non-Equilibrium Profile in Adsorbate Layer under Compressive Strain