© 2001, e-mail: Franz-Josef doht Elmer aht unibas doht ch
last modified: 2001/11/4

Frenkel-Kontorova-Tomlinson Model

The Frenkel-Kontorova model is a harmonic chain (mimic a soft layer of atoms) contected to a rigid upper plate via leaf springs. The chain feels a spatially periodic potential (mimic the substrate). The upper plate is driven by a constant velocity. The chain is damped by a velocity-proportional damping forces (emitting waves into the substrate and into the upper plate).

FKT model

The equations of motion: equations of motion Boundary conditions:

  • periodic: periodic boundary conditions
  • open: open boundary conditions