Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2005-05-31
Phys. Rev. E 73, 046122 (2006)
Physics
Condensed Matter
Statistical Mechanics
7 pages, 8 postscript figures; this extended version to appear in Phys. Rev. E
Scientific paper
10.1103/PhysRevE.73.046122
We use large scale simulations to study interacting particles in two dimensions in the presence of both an ac drive and quenched disorder. As a function of ac amplitude, there is a crossover from a low drive regime where the colloid positions are highly disordered to a higher ac drive regime where the system dynamically reorders. We examine the coarsening of topological defects formed when the system is quenched from a disordered low ac amplitude state to a high ac amplitude state. When the quench is performed close to the disorder-order crossover, the defect density decays with time as a power law with \alpha = 1/4 to 1/3. For deep quenches, in which the ac drive is increased to high values such that the dynamical shaking temperature is strongly reduced, we observe a logarithmic decay of the defect density into a grain boundary dominated state. We find a similar logarithmic decay of defect density in systems containing no pinning. We specifically demonstrate these effects for vortices in thin film superconductors, and discuss implications for dynamical reordering transition studies in these systems.
Olson Reichhardt C. J.
Reichhardt Charles
No associations
LandOfFree
Coarsening of Topological Defects in Oscillating Systems with Quenched Disorder 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 Coarsening of Topological Defects in Oscillating Systems with Quenched Disorder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coarsening of Topological Defects in Oscillating Systems with Quenched Disorder will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-455293