Fig. 3: Operation principles of multi-state data storage.
a I − B curve of the CrOCl tunneling device at 2 K. The pink curve shows the differential current δI = I(B)∣up − I(B)∣down. The critical field where δI reaches a maximum (at B0) and the hysteresis closes (at Bs) are annotated by black arrows. b Tunneling current over time after several electric sweeps. The dashed lines represent the current values at 3.33 T in Bdown and Bup sweeping cycles extracted from a. c I − B curves with different magnetic sweep ranges. d 2D map of the tunneling current after designed electric and magnetic sweeps. e, f Tunneling current e after alternating electric and magnetic sweeps. The corresponding magnetic and electric fields versus time are plotted in f. Data were obtained in device 3 ( ~ 11.3 nm CrOCl).
