Depinning dynamics of two-dimensional dusty plasmas on a one-dimensional periodic substrate

Abstract

We investigate the depinning dynamics of two-dimensional dusty plasmas (2DDP) driven over one-dimensional periodic substrates (1DPS) using Langevin dynamical simulations. We find that, for a specific range of substrate strengths, as the external driving force increases from zero, there are three different states, which are the pinned, the disordered plastic flow, and the moving ordered states, respectively. These three states are clearly observed using different diagnostics, including the collective drift velocity, static structural measures, the particle trajectories, the mean-squared displacements, and the kinetic temperature. We compare the observed depinning dynamics here with the depinning dynamics in other systems.

arXiv comment8 pages, 6 figures

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Cited by in corpus (8)

• Continuous and Discontinuous Transitions in the Depinning of Two-Dimensional Dusty Plasmas on a One-Dimensional Periodic Substrate
• Sarkas: A Fast Pure-Python Molecular Dynamics Suite for Plasma Physics
• Directional Locking in a 2D Yukawa Solid Modulated by a 2D Periodic Substrate
• Phonon spectra of a two-dimensional solid dusty plasma modified by two-dimensional periodic substrates
• Superlubric-pinned transition of a two-dimensional solid dusty plasma under a periodic triangular substrate
• Dynamical commensuration effect in a two-dimensional Yukawa solid modulated by periodic substrates
• Driven dust-charge fluctuation and chaotic ion dynamics in the plasma sheath and pre-sheath regions
• Structure-dynamics relationship in ratcheted colloids: Resonance melting, dislocations, and defect clusters