Tierno, PietroReimann, PeterJohansen, Tom H.Sagués i Mestre, Francesc2019-07-232019-07-232010-12-010031-9007https://hdl.handle.net/2445/137960We 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.4 p.application/pdfeng(c) American Physical Society, 2010Física de partículesParamagnetismeParticle physicsParamagnetisminfo:eu-repo/semantics/article5849712019-07-23info:eu-repo/semantics/openAccess