%0 Journal Article
%A Dinis Vizcaíno, Luis Ignacio
%A González Herrera, Elvira María
%A Anguita, J. V.
%A Rodríguez Parrondo, Juan Manuel
%A Vicent López, José Luis
%T Current reversal in collective ratchets induced by lattice instability
%D 2007
%@ 1098-0121
%U https://hdl.handle.net/20.500.14352/52060
%X A collective mechanism for current reversal in superconducting vortex ratchets is proposed. The mechanism is based on a two-dimensional instability of the ground state (T=0) of the system. We illustrate our results with numerical simulations and experiments in Nb superconducting films fabricated on top of Si substrates with artificially induced asymmetric pinning centers.
%~