Experimental investigation of flux motion in exponentially shaped Josephson junctions

Details Experimental investigation of flux motion in exponentially shaped Josephson junctions Experimental investigation of flux motion in exponentially shaped Josephson junctions

2002-03-04

arxiv.org/abs/cond-mat/0203055v1

Physics

Condensed Matter

Superconductivity

16 pg, 8 figures, Submitted in PRB March 4

Scientific paper

10.1103/PhysRevB.66.134531

We report experimental and numerical analysis of expontentially shaped long Josephson junctions with lateral current injection. Quasi-linear flux flow branches are observed in the current-voltage characteristic of the junctions in the absence of magnetic field. A strongly asymmetric response to an applied magnetic field is also exhibited by the junctions. Experimental data are found in agreement with numerical predictions and demonstrate the existence of a geometry-induced potential experienced by the flux quanta in nonuniform width junctions.

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