Vortex motion rectification in Josephson junction arrays with a ratchet potential

Details Vortex motion rectification in Josephson junction arrays with a ratchet potential Vortex motion rectification in Josephson junction arrays with a ratchet potential

2004-11-19

arxiv.org/abs/cond-mat/0411507v1

Phys. Rev. Lett. 94, 177001 (2005)

Physics

Condensed Matter

Superconductivity

PDF only, 4 pages

Scientific paper

10.1103/PhysRevLett.94.177001

By 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.

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