Figure 3

Analysis of Switching Mechanism. (a) Three typical I–V plots in LRS state. Non-linearity in the characteristic I–V curve was observed. (b) Plots of the I–V characteristics of (a) on a log-log scale clearly showing two different slopes over the voltage range of interest. (c) and (d) Random telegraph noise (RTN) trend observed in the LRS state. (e) and (f) Power spectrum density (PSD) plot of the RTN data of (c) and (d) respectively.