# Synchronization of spin torque oscillators through spin Hall magnetoresistance

## TL;DR

This paper demonstrates how the phase difference in synchronized spin torque oscillators can be controlled via external current direction, leveraging spin Hall magnetoresistance effects for potential applications in spintronic devices.

## Contribution

It introduces a method to control phase synchronization in spin torque oscillators through external current manipulation based on spin Hall magnetoresistance.

## Key findings

- Synchronization occurs via spin Hall magnetoresistance.
- Switching current direction controls phase difference.
- In-phase and antiphase synchronization are achievable.

## Abstract

Spin torque oscillators placed onto a nonmagnetic heavy metal show synchronized auto-oscillations due to the coupling originating from spin Hall magnetoresistance effect. Here, we study a system having two spin torque oscillators under the effect of the spin Hall torque, and show that switching the external current direction enables us to control the phase difference of the synchronization between in-phase and antiphase.