Fig. 2: Characteristics of Au/VO2/Au memristor.

a Schematic of the Au/VO2/Au planar structure with electrical characterization setup. b High-resolution TEM image of the VO2 region. c The diffraction pattern extracted by fast Fourier transformation of (b). d Current-driven current–Voltage (I-V) characteristics of the memristor and simulated I-V curves from circuit model. e Voltage oscillations when measuring the current-driven I-V characteristics of the device. f Zoom-in views of the green box.