Vortex motion rectification in Josephson junction arrays with a ratchet potential.
نویسندگان
چکیده
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.
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ورودعنوان ژورنال:
- Physical review letters
دوره 94 17 شماره
صفحات -
تاریخ انتشار 2005