Simulation Toolchain for Neuromorphic Oscillatory Neural Networks Based on Beyond-CMOS Vanadium Dioxide Devices

In this work, we illustrate a simulation toolchain using technology computer-aided design (TCAD) software to simulate neuro-mimicking Oscillatory Neural Networks (ONNs) based on Beyond CMOS Vanadium Dioxide (VO
2
) oscillators. We use a dedicated TCAD approach to simulate thermal-induced resistive switching in VO
2
. We perform TCAD and TCAD -SPICE mixed-mode simulations to simulate all the key elements of the ONN system: VO
2
device, VO
2
oscillator and dynamics of coupled VO
2
oscillators. This demonstrates that TCAD multi-physics simulations are an essential tool for probing the interplay between VO
2
material properties, device geometry and circuit dynamics, while providing insights and guidelines for the development of ONN technology based on Beyond CMOS VO
2
oscillators.