Título:
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Giant transversal particle diffusion in a longitudinal magnetic ratchet
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Autor/a:
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Tierno, Pietro; Reimann, Peter; Johansen, Tom H.; Sagués i Mestre, Francesc
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Otros autores:
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Universitat de Barcelona |
Abstract:
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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. |
Materia(s):
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-Física de partícules -Paramagnetisme -Particle physics -Paramagnetism |
Derechos:
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(c) American Physical Society, 2010
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Tipo de documento:
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Artículo Artículo - Versión publicada |
Editor:
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American Physical Society
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Compartir:
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