Non-damping magnetization oscillations in a single-domain ferromagnet

TL;DR

This paper theoretically investigates non-damped magnetization oscillations in a single-domain ferromagnet driven by spin-polarized current and magnetic field, showing controllability of oscillation parameters and potential for spin current injection.

Contribution

It introduces a theoretical analysis of non-damped magnetization oscillations controlled by magnetic field and spin current, and discusses spin current injection into non-magnetic systems.

Findings

Oscillation frequency and amplitude are controllable via magnetic field and spin current.

Non-damped oscillations can be sustained in the system.

Potential for injecting oscillating spin current into non-magnetic materials.

Abstract

Non-damped oscillations of the magnetization vector of a ferromagnetic system subject to a spin polarized current and an external magnetic field are studied theoretically by solving the Landau-Lifshitz-Gilbert equation. It is shown that the frequency and amplitude of such oscillations can be controlled by means of an applied magnetic field and a spin current. The possibility of injection of the oscillating spin current into a non-magnetic system is also discussed.