Modeling of coupled spin torque oscillators for applications in associative memories

Abstract

This paper presents micromagnetic and circuit-level models describing the behavior of spin-torque oscillators (STOs). We demonstrate micromagnetic models that are in good agreement with experimental models for both individual and interconnected STOs and show that one can construct compact models based on the macrospin-approximation that match well with a full micromagnetic description. We study synchronization phenomena in various STOs, which are interconnected electrically or magnetically. The presented models can be used for studying complex networks of interconnected STOs. These networks may serve as hardware for oscillatory associative memories.