Fig. 2: Hysteretic Fraunhofer patterns of the unsaturated barrier under in-plane magnetic field.
a Critical current Ic oscillation patterns of device #01 when the magnetic field sweeps from ±9 mT (upper panel: positive to negative; lower panel: inverse). The yellow dashed lines mark out the central maximal of Ic, with respect to distinct field positions. b Hysteresis of Ic and the corresponding junction resistance R starting from ±9 mT. The effective field seen by the junction has an additional value of 0.9 mT originating from the remnant barrier moment. c Similar hysteresis loop of Ic and R for the maximum applied field Bmax of ±15 mT, which gives a larger contribution to the total flux in the junction of 2.8 mT for a magnetic barrier whose magnetization is still unsaturated.
