Fig. 6
Quantitative mapping of polarization. a Example of a I–V curve measured on a capacitor (the capacitance contribution has been subtracted). The forward and reverse traces are plotted in blue and red. The non-switching components of the current are plotted as dashed black and green lines, respectively. Subtraction of the non-switching current from the total current allows the switching current traces to be extracted, as shown in b, c for the forward and reverse sweep directions, respectively. Numerical integration (after conversion from voltage to time, given measurement frequency) allows extraction of the polarization maps, as seen in d, e. This confirms the quantitative nature and utility of the G-IV technique
