Modelling hysteresis in vanadium dioxide oscillators

An original circuit-level model of two-terminal vanadium dioxide elec-tron devices exhibiting electronic hysteresis is presented. Such devices allow realisation of very compact relaxation nano-oscillators that potentially can be used in bio-inspired neurocomputing. The proposed model is exploited to determine the parameters, values that ensure stable periodic oscillations. Introduction: Vanadium dioxide (VO2) is a correlated electron material that exhibits abrupt insulator-to-metal (IMT) and metal-to-insulator (MIT) phase transitions under the application of a critical electric field (transitions may also be triggered by other stimuli, such as strain and thermal excitation) [1]. These phase transitions correspond to a larg