Figure 8

Bias dependence of large inverse TMC. Positive and negative bias dependence of (a) the iTMC, (b) the capacitance C _P(AP) of the P(AP) configuration and (c) the log-scaled C _P(AP) in the positive bias region at 20, 40 and 4 kHz, respectively, for sample C. The solid lines represent the fitting results calculated using the parameter, indicated in Supplementary Table 2. The iTMR at 20 Hz is also shown. (d) Positive bias dependence of the calculated iTMC in varying φ ^+V, which is the ratio \({\alpha }_{{\rm{P}}}^{\mu }/{\alpha }_{{\rm{AP}}}^{\mu }\), described in equation (3). The best fit to experimental results is obtained by setting φ ^+V  = 1.05, 1.02 and 1.08 at 20, 40 and 4 kHz, respectively.