Fig. 2: Numerical modeling of combined effects of nonuniformity and stray magnetic fields from a trapped vortex. | Nature Communications

Fig. 2: Numerical modeling of combined effects of nonuniformity and stray magnetic fields from a trapped vortex.

From: Demonstration of a superconducting diode-with-memory, operational at zero magnetic field with switchable nonreciprocity

Fig. 2

Left panels show simulated Ic(H) patterns for a nonuniform JJ (the same as shown by magneta curves in Fig. 1) upon approaching an Abrikosov vortex to the JJ along the middle line, xv = L/2, from a zv = ∞ to e zv = 0.01L. Right panels represent corresponding nonreciprocities, ∣Ic+(H)/Ic−(H)∣. It is seen that upon approaching the vortex to the junction, growing stray fields progressively shifts nonreciprocal peaks. At a certain distance (d) the main peak passes through H = 0. This is the optimal geometrical configuration for a zero-field diode.

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