Files
Document type
ArticleVersion
Published versionPublication date
Publication license
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/184899
Emergent colloidal currents across ordered and disordered landscapes
Journal Title
Director/Tutor
Journal ISSN
Volume Title
Related resource
Abstract
Many-particle effects in driven systems far from equilibrium lead to a rich variety of emergent phenomena. Their classification and understanding often require suitable model systems. Here we show that microscopic magnetic particles driven along ordered and defective lattices by a traveling wave potential display a nonlinear current-density relationship, which arises from the interplay of two effects. The first one originates from particle sizes nearly commensurate with the substrate in combination with attractive pair interactions. It governs the colloidal current at small densities and leads to a superlinear increase. We explain such effect by an exactly solvable model of constrained cluster dynamics. The second effect is interpreted to result from a defect-induced breakup of coherent cluster motion, leading to jamming at higher densities. Finally, we demonstrate that a lattice gas model with parallel update is able to capture the experimental findings for this complex many-body system.
Subject
Subject (English)
Citation
Citation
LIPS, Dominik, et al. Emergent colloidal currents across ordered and disordered landscapes. Communications Physics. 2021. Vol. 4, num. 224. ISSN 2399-3650. [consulted: 16 of August of 2026]. Available at: https://hdl.handle.net/2445/184899