title: Vortex motion rectification in Josephson junction arrays with a ratchet potential.
abstract: By means of electrical transport measurements we have studied the rectified motion of vortices in ratchet potentials engineered on overdamped 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 were detected varying the driving force and vortex density revealing the influence of vortex-vortex interaction in the ratchet effect.
authors.affiliation: Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, Av. Bustillo 9500, R84002AGP S. C. de Bariloche, Argentina. shalom@cab.cnea.gov.ar
authors.forename: D E
authors.initials: DE
authors.lastname: Shalóm
authors.forename: H
authors.initials: H
authors.lastname: Pastoriza