Dynamic phases in the two-dimensional underdamped driven Frenkel-Kontorova model

Jasmina Tekić, Oleg M. Braun*, Bambi Hu

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

47 Citations (Scopus)


We study the nonlinear dc response of a two-dimensional underdamped system of interacting atoms subject to an Isotropic periodic external potential with triangular symmetry. When driving force increases, the system transfers from a disorder locked state to an ordered sliding state corresponding to a moving crystal. By varying the values of the effective elastic constant, damping, and temperature, we found different scenarios and intermediate phases during the ordering transition. For a soft atomic layer, the system passes through a plastic-channel regime that appears as a steady-state regime at higher values of the damping coefficient. For high values of the effective elastic constant, when the atomic layer is stiff, the intermediate plastic phase corresponds to a traffic-jam regime with immobile islands in the sea of running atoms. At a high driving of the stiff layer, a solitonlike elastic flow of atoms has been observed.

Original languageEnglish
Article number026104
Number of pages11
JournalPhysical Review E
Issue number2
Publication statusPublished - 8 Feb 2005

Scopus Subject Areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics


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