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

## TL;DR

This study uses Langevin simulations to explore how two-dimensional dusty plasmas transition between pinned, disordered, and ordered moving states when driven over a one-dimensional periodic substrate, revealing detailed depinning dynamics.

## Contribution

It provides a detailed analysis of the depinning process in 2D dusty plasmas on 1D substrates, identifying three distinct dynamic states and comparing them with other systems.

## Key findings

- Identification of three states: pinned, disordered plastic flow, and moving ordered.
- Use of multiple diagnostics to characterize depinning behavior.
- Comparison of dusty plasma depinning with other physical systems.

## 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.