A review of modelling in ferrimagnetic spintronics

TL;DR

This review discusses computational modelling techniques for ferrimagnetic materials in spintronics, emphasizing thermal effects, atomistic spin dynamics, and macrospin approaches, with applications to GdFeCo and yttrium iron garnet.

Contribution

It provides a comprehensive survey of models used in ferrimagnetic spintronics, highlighting recent advances and future outlooks in the field.

Findings

Models successfully predict ultrafast magnetisation dynamics.

Material-specific models improve understanding of spintronic experiments.

Thermal effects are crucial in ferrimagnetic simulations.

Abstract

In this review we introduce computer modelling and simulation techniques which are used for ferrimagnetic materials. We focus on models where thermal effects are accounted for, atomistic spin dynamics and finite temperature macrospin approaches. We survey the literature of two of the most commonly modelled ferrimagnets in the field of spintronics--the amorphous alloy GdFeCo and the magnetic insulator yttrium iron garnet. We look at how generic models and material specific models have been applied to predict and understand spintronic experiments, focusing on the fields of ultrafast magnetisation dynamics, spincaloritronics and magnetic textures dynamics and give an outlook for modelling in ferrimagnetic spintronics.