Bistability and Hysteresis in the Sliding Friction of a Dimer

Details Bistability and Hysteresis in the Sliding Friction of a Dimer Bistability and Hysteresis in the Sliding Friction of a Dimer

2005-03-31

arxiv.org/abs/cond-mat/0503725v1

Physics

Condensed Matter

Materials Science

18 pages, 12 figures

Scientific paper

10.1103/PhysRevB.72.195418

The sliding friction of a dimer moving over a periodic substrate and subjected to an external force is studied in the steady state for arbitrary temperatures within a one-dimensional model. Nonlinear phenomena that emerge include dynamic bistability and hysteresis, and can be related to earlier observations for extended systems such as the Frenkel-Kontorova model. Several observed features can be satisfactorily explained in terms of the resonance of a driven-damped nonlinear oscillator. Increasing temperature tends to lower the resonant peak and wash out the hysteresis.

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