Pulse-coupled spin torque nano oscillators with dynamic synapses for neuromorphic computing

In this work, we present a system pulse-coupled spin torque nano oscillators (STNOs) as a novel physical implementation of coupled phase oscillators for neuromorphic computing. First, we describe the dynamical properties of pulse-coupled STNOs and explain their phase description. We investigated the system dynamics of fully pulse-coupled STNOs with both static and dynamic synapses through numerical simulations. Consequently, various cooperative phenomena, such as synchronous, clustered, and coherent states, can be observed depending on synaptic interactions. Finally, we discuss neuromorphic applications of such cooperative phenomena and possible implementation of dynamic synapse for the pulse-coupled STNOs.