2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/25319By means of electrical transport measurements we have studied the rectified motion of vortices in ratchet potentials engineered on over-damped Josephson junction arrays. The rectified voltage as a function of the vortex density shows a maximum efficiency close a matching condition to the period of the ratchet potential indicating a collective vortex motion. Vortex current reversals where detected varying the driving force and vortex density revealing the influence of vortex-vortex interaction in the ratchet effect.PDF only, 4 pagesSuperconductivitySoft Condensed MatterStatistical Mechanicstext