Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/137960
Title: | Giant transversal particle diffusion in a longitudinal magnetic ratchet |
Author: | Tierno, Pietro Reimann, Peter Johansen, Tom H. Sagués i Mestre, Francesc |
Keywords: | Física de partícules Paramagnetisme Particle physics Paramagnetism |
Issue Date: | 1-Dec-2010 |
Publisher: | American Physical Society |
Abstract: | We study the transversal motion of paramagnetic particles on a uniaxial garnet film, exhibiting a longitudinal ratchet effect in the presence of an oscillating magnetic field. Without the field, the thermal diffusion coefficient obtained by video microscopy is D 0 ≈ 3 × 10 − 4 μ m 2 / s . With the field, the transversal diffusion exhibits a giant enhancement by almost four decades and a pronounced maximum as a function of the driving frequency. We explain the experimental findings with a theoretical interpretation in terms of random disorder effects within the magnetic film. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.105.230602 |
It is part of: | Physical Review Letters, 2010, vol. 105, num. 23, p. 230602 |
URI: | http://hdl.handle.net/2445/137960 |
Related resource: | https://doi.org/10.1103/PhysRevLett.105.230602 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Física de la Matèria Condensada) Articles publicats en revistes (Ciència dels Materials i Química Física) |
Files in This Item:
File | Description | Size | Format | |
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584971.pdf | 1.1 MB | Adobe PDF | View/Open |
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