Manipulating Josephson junctions in thin-films by nearby vortices
نویسندگان
چکیده
It is shown that a vortex trapped in one of the banks of a planar edge-type Josephson junction in a narrow thin-film superconducting strip can change drastically the dependence of the junction critical current on the applied field, IcðHÞ. When the vortex is placed at certain discrete positions in the strip middle, the pattern IcðHÞ has zero at H 1⁄4 0 instead of the traditional maximum of ‘0-type’ junctions. The number of these positions is equal to the number of vortices trapped at the same location. When the junction–vortex separation exceeds W , the strip width, IcðHÞ is no longer sensitive to the vortex presence. The same is true for any separation if the vortex approaches the strip edges. 2014 Elsevier B.V. All rights reserved.
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