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Dynamics of self-organized driven particles with competing range interaction.

H J Zhao¹, V R Misko, F M Peeters

¹Department of Physics, University of Antwerpen, Groenenborgerlaan 171, B-2020 Antwerpen, Belgium.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|September 17, 2013

Summary

External forces drive self-organized patterns on substrates. Increasing force causes transitions from static to dynamic patterns, including nonequilibrium stripes, depending on pinning strength, as shown in a dynamical phase diagram.

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Area of Science:

Physics
Materials Science
Statistical Mechanics

Background:

Self-organized patterns emerge in systems with competing interactions.
External driving forces can induce nonequilibrium phenomena in condensed matter systems.

Purpose of the Study:

To investigate pattern evolution under external driving forces.
To characterize the transition from static to dynamic patterns.
To explore the formation of nonequilibrium stripes.

Main Methods:

Simulating particles with competing range interactions on a substrate.
Applying an external driving force.
Analyzing pattern evolution with varying driving force and pinning strength.

Main Results:

Static patterns transition to dynamic states with increasing driving force.
Observed transitions include disordered phases, depinned patterns, and nonequilibrium stripes.
Stripes form parallel or perpendicular to the driving force, influenced by pinning strength.

Conclusions:

A dynamical phase diagram summarizes the observed pattern transitions.
Pinning strength critically influences stripe orientation in driven systems.
Nonequilibrium pattern formation is sensitive to driving force and substrate interactions.