Physics – Condensed Matter – Materials Science
Scientific paper
2010-01-08
Phys. Rev. E 81, 011121 (2010)
Physics
Condensed Matter
Materials Science
7 pages, 8 figures, to appear in Physcial Review E
Scientific paper
10.1103/PhysRevE.81.011121
We study the nonlinear driven response and sliding friction behavior of the phase-field-crystal (PFC) model with pinning including both thermal fluctuations and inertial effects. The model provides a continuous description of adsorbed layers on a substrate under the action of an external driving force at finite temperatures, allowing for both elastic and plastic deformations. We derive general stochastic dynamical equations for the particle and momentum densities including both thermal fluctuations and inertial effects. The resulting coupled equations for the PFC model are studied numerically. At sufficiently low temperatures we find that the velocity response of an initially pinned commensurate layer shows hysteresis with dynamical melting and freezing transitions for increasing and decreasing applied forces at different critical values. The main features of the nonlinear response in the PFC model are similar to the results obtained previously with molecular dynamics simulations of particle models for adsorbed layers.
Achim C. V.
Ala-Nissila Tapio
Elder K. R.
Granato Enzo
Ramos J. A. P.
No associations
LandOfFree
Dynamical transitions and sliding friction of the phase-field-crystal model with pinning does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Dynamical transitions and sliding friction of the phase-field-crystal model with pinning, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamical transitions and sliding friction of the phase-field-crystal model with pinning will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-502393