# Uniform magnetization dynamics of a submicron ferromagnetic coin driven by the spin-orbit coupled spin torque

## TL;DR

This paper presents a model of magnetization dynamics in a ferromagnet/doped semiconductor hybrid with Rashba spin-orbit interaction, driven by electric pulses, revealing nonlinear oscillator-like behavior and switching properties.

## Contribution

It introduces a simple model for magnetization dynamics influenced by spin-orbit coupling and electric pulses, highlighting nonlinear behavior and switching characteristics.

## Key findings

- Magnetization dynamics resemble a damped nonlinear oscillator.
- Electric pulse shape and magnitude significantly affect magnetization.
- Switching properties depend on field magnitude and direction.

## Abstract

A simple model of magnetization dynamics in a ferromagnet/doped semiconductor hybrid structure with Rashba spin-orbit interaction (SOI) driven by an applied pulse of the electric field is proposed. The electric current excited by the applied field is spin-polarized due to the SOI and therefore it induces the magnetization rotation in the ferromagnetic layer via s-d exchange coupling. Magnetization dynamics dependence on the electric pulse shape and magnitude is analyzed for realistic values of parameters. We show that it is similar to the dynamics of a damped nonlinear oscillator with the time-dependent frequency proportional to the square root of the applied electric field. The magnetization switching properties of an elliptic magnetic element are examined as a function of the applied field magnitude and direction.