Fig. 5: Stochastic field-free superconducting diode effect.
From: Emergent ferromagnetism with superconductivity in Fe(Te,Se) van der Waals Josephson junctions
a Non-reciprocal critical current measured under different magnetization conditions. All curves are measured at 2 K and zero magnetic field, but with different field cooling conditions. From top to bottom: under −10 mT field cooling (FC); before zero field cooling (ZFC); after ZFC; under +10 mT FC. b Schematics of spin configuration with different net magnetization describing the measurement schemes in a. c 50 repetitions of critical current measurements performed with (red) and without (blue) thermal cycles performed between each current scan. Here a thermal cycle (TC) refers to a procedure of heating the device to 25 K (above Tc) and cooling back to 2 K. d Histograms of stochastic critical current distribution with (left) and without (right) TCs. s.d. standard deviation.
