Slow plastic creep of 2D dusty plasma solids

Abstract

We report complex plasma experiments, assisted by numerical simulations, providing an alternative qualitative link between the macroscopic response of polycrystalline solid matter to small shearing forces and the possible underlying microscopic processes. In the stationary creep regime we have determined the exponents of the shear rate dependence of the shear stress and defect density, being $\alpha =1.15\pm 0.1$ and $\beta =2.4\pm 0.4$, respectively. We show that the formation and rapid glide motion of dislocation pairs in the lattice are dominant processes.

arXiv comment5 pages, 5 figures accepted by PRL

References in corpus (9)

• Shear Flows and Shear Viscosity in a Two-Dimensional Yukawa System (Dusty Plasma)
• Visualizing kinetic pathways of homogeneous nucleation in colloidal crystallization
• Supersonic dislocations observed in a plasma crystal
• Shear viscosity and shear thinning in two-dimensional Yukawa liquids
• Static and dynamic shear viscosity of a single layer complex plasma
• Magnetoplasmons in rotating dusty plasmas
• Microstructure of a liquid complex (dusty) plasma under shear
• Anisotropic shear melting and recrystallization of a two-dimensional complex (dusty) plasma
• Digital Imaging and Analysis of Dusty Plasmas

Cited by in corpus (14)

• Interparticle attraction in 2D complex plasmas
• Revealing the supercritical dynamics of dusty plasmas and their liquid-like to gas-like dynamical crossover
• Phonon spectra of two-dimensional liquid dusty plasmas on a one-dimensional periodic substrate
• Structures and Diffusion of Two Dimensional Dusty Plasmas on One Dimensional Periodic Substrates
• Depinning dynamics of two-dimensional dusty plasmas on a one-dimensional periodic substrate
• Continuous and Discontinuous Transitions in the Depinning of Two-Dimensional Dusty Plasmas on a One-Dimensional Periodic Substrate
• Fickian yet non-Gaussian diffusion in two-dimensional Yukawa liquids
• Transport properties of disordered 2D complex plasma crystal
• 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
• Delocalization in infinite disordered 2D lattices of different geometry
• Superlubric-pinned transition of a two-dimensional solid dusty plasma under a periodic triangular substrate
• Observation of fast sound in two-dimensional dusty plasma liquids
• Dynamical commensuration effect in a two-dimensional Yukawa solid modulated by periodic substrates