%0 Book Section
%T Experimental vortex ratchet effect in nanostructured superconductors
publisher Amer Inst Physics
%D 2006
%U 0-7354-0347-3
%@ https://hdl.handle.net/20.500.14352/53561
%X Superconducting Nb thin films were grown on different arrays of triangle-shape metallic islands. The vortex lattice dynamics could be strongly modified by these asymmetric vortex traps. These asymmetric pinning potentials lead to a rectification effect on the vortex motion: Injecting an ac supercurrent on the sample yields a net dc vortex flow. This vortex ratchet  ffect is adiabatic and reversible: The effect is frequency independent and the polarity of the dc voltage output could be tuned by the applied magnetic fields and the input ac currents.
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