Fig. 2: Superconducting current in an FTS vJJ.
From: Emergent ferromagnetism with superconductivity in Fe(Te,Se) van der Waals Josephson junctions
a Temperature versus resistance of a junction device (F8) under zero-field cooling (ZFC, gray), 1 T field cooling (1 T FC, red) and the bare FTS flake under ZFC (blue, 5 times enlarged). b Zoomed-in area of the superconducting states in a. The junction resistance drops to zero in two stages (I) and (II). c I–V curves of the junction measured at 2 K and 0 T. No hysteresis behavior is observed, indicating that the Josephson junction is in the overdamping regime.
