# Influence of field-like torque in synchronization of spin torque oscillators

## TL;DR

This paper investigates how field-like torque influences the synchronization, stability, and power of coupled spin torque oscillators, revealing that it can induce synchronization and enhance oscillation quality.

## Contribution

It demonstrates that field-like torque can cancel damping effects and promote synchronized oscillations in coupled spin torque oscillators, a novel insight into their control.

## Key findings

- Field-like torque can cancel damping effects.
- Presence of field-like torque enhances power and Q-factor.
- Synchronization can be achieved via field-like torque influence.

## Abstract

The magnetization dynamics of two parallelly coupled spin torque oscillators, destabilization of steady states and removal of multistability, are investigated by taking into account the influence of field-like torque. It is shown that the existence of such torque can cancel the effect of damping and can, therefore, cause the oscillators to exhibit synchronized oscillations in response to direct current. Further, our results show that the presence of field-like torque enhances the power and Q-factor of the synchronized oscillations. The validity of the above results is confirmed by numerical and analytical studies based on the stochastic Landau-Lifshitz-Gilbert-Slonczewski equation.