Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/158946
Title: | Collective directional locking of colloidal monolayers on a periodic substrate |
Author: | Stoop, Ralph L. Straube, Arthur V. Johansen, Tom H. Tierno, Pietro |
Keywords: | Col·loides Matèria condensada tova Colloids Soft condensed matter |
Issue Date: | 4-Feb-2020 |
Publisher: | American Physical Society |
Abstract: | We investigate the directional locking effects that arise when a monolayer of paramagnetic colloidal particles is driven across a triangular lattice of magnetic bubbles. We use an external rotating magnetic field to generate a two-dimensional traveling wave ratchet forcing the transport of particles along a direction that intersects two crystallographic axes of the lattice. We find that, while single particles show no preferred direction, collective effects induce transversal current and directional locking at high density via a spontaneous symmetry breaking. The colloidal current may be polarized via an additional bias field that makes one transport direction energetically preferred. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.124.058002 |
It is part of: | Physical Review Letters, 2020, vol. 124, num. 5, p. 058002 |
URI: | http://hdl.handle.net/2445/158946 |
Related resource: | https://doi.org/10.1103/PhysRevLett.124.058002 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Física de la Matèria Condensada) |
Files in This Item:
File | Description | Size | Format | |
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699296.pdf | 1.3 MB | Adobe PDF | View/Open |
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