Fig. 3
Temperature-controlled instability due to a Mott transition. a im–vm plots from Eqs. (1) and (2) with the Mott transition at 340 K parameterized within Rth, representing VO2. Solid line: parametric T-sweep. Dashed line: im-sweep. b dT/dt vs. T for an applied external voltage of 0.7 V. c dT/dt vs. T for an applied external current of 25 µA. Yellow spheres indicate stable steady-states. d Stable (jH and jL) and unstable (jU) current densities corresponding to the steady-states for different applied Vext. e Stable (εH and εL) and unstable (εU) electric-fields corresponding to the steady-states for different applied external current Iext. f Area fractions (Af) of the two decomposed current-density states (x and 1 − x) plotted against Vext. g Thickness fractions (Zd) containing the two decomposed states (z and 1 − z) plotted against Iext. h ΔH vs. Vext for the unstable (‘U’) and decomposed (‘D’) current-density states. i ΔH vs. Iext for the unstable and decomposed electric-field states
