Extended Data Fig. 5: Landau-type model of resistive switching.
a, Schematic representation of the resistor network used to model VO2. Each node of the network is connected to its nearest neighbours by a resistor. The value of the resistor depends on the local state: metallic (dark grey) or insulating (white). A load resistor (Rload) is placed in series with the network. b, Free energy (F) as a function of the order parameter η for three different temperatures (331 K, 340 K and 349 K). The node is metallic if η < 0 and insulating for η > 0.
