[15p-P15-1~17] 13.5 Semiconductor devices and related technologies

[15p-P15-14] Fabrication of Phase-Transition Neuron Firing by Joule Heat Accumulation

〇Takeaki Yajima¹, Tomonori Nishimura¹, Akira Toriumi¹ (1.The Univ. of Tokyo)

Keywords:Neuromorphic hardware, Metal-insulator transition, VO2

An artificial neuron for the neuromorphic hardware was fabricated by using the metal-insulator transition in vanadium dioxide (VO₂). This VO₂ neuron fires by accumulating Joule heat generated by the input voltage pulses, unlike the conventional artirficial neuron which accumulates input charge in the capacitor. The fabricated VO₂ neuron is more suitable for integrated circuits due to its small occupation area compared with the conventional artificial neuron using capacitors.