Fig. 2
The sketch of the two sequence pulse voltage modes with a type I (double pulses in two opposite polarities) and b type II (a single switching pulse overlapping a negative DC bias). Domain switching current transients under different V applied to a virgin sample in c type I and d type II modes, where the insets show the linear fit of the dependence of the plateaus of domain switching current on V. P-V hysteresis loops under different V transferred from domain switching current transients in e type I and f type II. Schematic diagram of the Au/LN/Pt structure and the directions of the built-in electric field Eb and depolarization field Ed in the inset of e