Lubricated friction in Frenkel–Kontorova model between incommensurate surfaces

• The superlubricity is studied by the generalized Frenkel–Kontorova model.
• Each particle of the top layer is driven by dc external driving force.
• The static friction could easily flow into the low friction with existing the lubricant layer.

We study the superlubricity in the generalized Frenkel–Kontorova model. Each particle of the top layer is driven by external dc driving force FextFext. When the ratios of the three inherent length scales of the system are chosen to be the Golden Mean (a/b=233/144,c/a=144/89), we find that there exists a critical interparticle interaction strength above which the static friction force FsuFsu of the top layer is zero. And FsuFsu could easily flow into the low friction with existing the lubricant layer.