Figure 7
(a) plot of lnρ vs. 1/T fitted using (i) band conduction model and (ii) NNH (180–300 K). The crossover temperature from band conduction to NNH is 333 K for STO and 285 K for STO-N116 and STO-N516. (b) Plot of lnρ vs. T−1/4 fitted using the VRH model. The solid black lines represent the regimes of the corresponding mechanisms.
