Identifying anomalous diffusion and melting in dusty plasmas

Abstract

Anomalous diffusion in liquids and the solid-liquid phase transition (melting) are studied in two-dimensional Yukawa systems. The self-intermediate scattering function (self-ISF), calculated from simulation data, exhibits a temporal decay, or relaxation, with a characteristic relaxation time. This decay is found to be useful for distinguishing normal and anomalous diffusion in a liquid, and for identifying the solid-liquid phase transition. For liquids, a scaling of the relaxation time with length scale is found. For the solid-liquid phase transition, the shape of the self-ISF curve is found to be a sensitive indicator of phase. Friction has a significant effect on the timing of relaxation, but not the melting point.

7 pages, 5 figures

References in corpus (13)

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• Mode-Coupling Theory (MCT) Lecture Notes
• Dynamical Heterogeneity close to the Jamming Transition in a Sheared Granular Material
• Aging Effects in a Lennard-Jones Glass
• Dynamical correlations and collective excitations of Yukawa liquids
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Cited by in corpus (13)

• Coupling Strength in Coulomb and Yukawa One-Component Plasmas
• Slow dynamics in a quasi-two-dimensional binary complex plasma
• Static and dynamic shear viscosity of a single layer complex plasma
• Structures and Diffusion of Two Dimensional Dusty Plasmas on One Dimensional Periodic Substrates
• Structure and dynamics of a glass-forming binary complex plasma with non-reciprocal interaction
• Viscosity calculated in simulations of strongly-coupled dusty plasmas with gas friction
• Shear Flow instability in a strongly coupled dusty plasma
• Interplay of single particle and collective response in molecular dynamics simulation of dusty plasma system
• Dynamical states in two-dimensional charged dust particle clusters in plasma medium
• Fickian yet non-Gaussian diffusion in two-dimensional Yukawa liquids
• Chaotic dynamics of small sized charged Yukawa Dust Clusters
• Universal Scaling of Pair-Excess Entropy and Diffusion in Strongly Coupled Liquids
• Nonlinear Mixing of Waves in a Yukawa One Component Plasma