Frequency-tunable nano-oscillator based on Ovonic Threshold Switch (OTS)

Abstract

Nano-oscillator devices are gaining more and more attention as a prerequisite for developing novel energy-efficient computing systems based on coupled oscillators. Here, we introduce a highly scalable, frequency-tunable nano-oscillator consisting of one Ovonic threshold switch (OTS) and a field-effect transistor (FET). It is presented that the proposed device shows an oscillating behavior with a natural frequency (f_{nat}) adjustable from 0.5 to 2 MHz depending on the gate voltage applied to the FET. In addition, under a small periodic input, it is observed that the oscillating frequency (f_{osc}) of the device is locked to the frequency (f_{in}) of the input when f_{in} ~ f_{nat}, demonstrating the so-called synchronization phenomenon. It also shows the phase lock of the combined oscillator network using circuit simulation, where the phase relation between the oscillators can be controlled by the coupling strength. These results imply that the proposed device is promising for applications in oscillator-based computing systems.

18 pages including 5 figures

References in corpus (6)

• Network of Time-Multiplexed Optical Parametric Oscillators as a Coherent Ising Machine
• Coexistence of tetrahedral and octahedral-like sites in amorphous phase change materials
• Generation linewidth of an auto-oscillator with a nonlinear frequency shift: Spin-torque nano-oscillator
• Memcomputing NP-complete problems in polynomial time using polynomial resources and collective states
• Oscillator-based Ising Machine
• OIM: Oscillator-based Ising Machines for Solving Combinatorial Optimisation Problems