Fig. 4: Phase biasing effect in Nb-(Pt/Cu)-Nb JJ.
From: Phase biasing of a Josephson junction using Rashba–Edelstein effect
a V(H) curve of Nb-(Pt(30 nm)/Cu)-Nb junction fitted with Fraunhofer type relation shows a significant asymmetry about the central minimum. The open symbols are for experimental data points, measured at 2K with 100 μA current, and the solid lines are the fits. Two sides about the central minimum were fitted separately. The current distribution in the junction with one flux quantum(Φ0) and two flux quanta(2Φ0) are shown in the inset schematic, along with the non-equilibrium Rashba–Edelstein spin moment (MRE). b Representative V(H) curves for an Nb-(Pt(30 nm)/Cu)-Nb junction depicting the major and minor field sweeps shows the phase biasing effect at zero field. The ΔH values obtained by varying the range of field sweeps in minor loops are plotted in panel (c) for the same device.
