Large critical current density Josephson $\pi$ junctions with PdNi barriers

Arjun Sapkota, Pukar Sedai, Robert M. Klaes +3

We report large $\pi$-state critical current densities, $J_c(\pi )$, in Nb/Pd${}_{89}$Ni${}_{11}$/Nb Josephson junctions at Pd${}_{89}$Ni${}_{11}$ thicknesses near the first $\pi$-state. We obser…