Domain Wall Motion in Magnetic Nanostrips

TL;DR

This paper reviews the fundamental properties and dynamics of domain walls in magnetic nanostrips, emphasizing their relevance for spintronics and the use of micromagnetic simulations and models to understand their behavior.

Contribution

It provides a comprehensive theoretical and computational framework for understanding domain wall behavior in ferromagnetic and ferrimagnetic nanostrips with perpendicular magnetic anisotropy.

Findings

Describes static and dynamic properties of domain walls

Uses micromagnetic simulations supported by 1D models

Provides tools for future experimental analysis

Abstract

Domain walls are the transition regions between two magnetic domains. These objects have been very relevant during the last decade, not only due to their intrinsic interest in the development of novel spintronics devices but also because of their fundamental interest. The study of domain wall has been linked to the research on novel spin-orbit coupling phenomena such as the Dzyaloshinskii-Moriya interaction and the spin Hall effect amount others. Domain walls can be nucleated in ferromagnetic nanostrips and can be driven by conventional magnetic fields and spin currents due to the injection of electrical pulses, which make them very promising for technological applications of recording and logic devices. In this review, based on full micromagnetic simulations supported by extended one-dimensional models, we describe the static and dynamic properties of domain walls in thin ferromagnetic and ferrimagnetic wires with perpendicular magnetic anisotropy. The present chapter aims to provide a fundamental theoretical description of the fundaments of domain walls, and the numerical tools and models which allow describing the DW dynamics in previous and future experimental setups.