Fig. 4: Polarization-switching kinetics in CIPS.
From: Configurable kinetics of polarization switching via ion migration in ferroionic CuInP2S6
a Measured Isc as a function of pulse width at various Vp, where a Vp (11.4 V, 2 ms) is used as reset voltage to obtain an initial Pdown state. The solid lines are the fitting curves. b Mapping plot of Isc derived from (a), highlighting two distinct switching process that intralayer switching for a short time and intralayer-interlayer coupling switching for a long time. c Extracted Lorentzian distribution from (a) at 4 V Vp. d Measured Isc versus pulse width at different Vp, with an initial Pup state through applying reset voltage Vp (−11.4 V, 2 ms). e Mapping plot of Isc derived from (d). f Extracted Lorentzian distribution from (d) at 4 V Vp. g Diagram of Cu ions intralayer and interlayer hopping progress, of which dominates the switching process, resulting in the corresponding switching mode. h Time-dependent switching model of Type I, Type II, and Type III. The focused Cu ions on the bottom layer are used to describe their migration pathway in different switching modes.
