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Dynamical phase diagram of the dc-driven underdamped Frenkel-Kontorova chain

Maxim Paliy·Oleg Braun·Thierry Dauxois·Bambi Hu
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Abstract

Multistep dynamical phase transition from the locked to the running state of atoms in response to a dc external force is studied by MD simulations of the generalized Frenkel-Kontorova model in the underdamped limit. We show that the hierarchy of transition recently reported [Braun et al, Phys. Rev. Lett. 78, 1295 (1997)] strongly depends on the value of the friction constant. A simple phenomenological explanation for the friction dependence of the various critical forces separating intermediate regimes is given.

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Maxim Paliy, Oleg Braun, Thierry Dauxois, Bambi Hu. 1997-11-26. Dynamical phase diagram of the dc-driven underdamped Frenkel-Kontorova chain. https://doi.org/10.1103/physreve.56.4025

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