Magnetization dynamics and reversal of two-dimensional magnets
Mesoscale and Nanoscale Physics
2022-09-13 v1
Abstract
Micromagnetics simulation based on the classical Landau-Lifshitz-Gilbert (LLG) equation has long been a powerful method for modeling magnetization dynamics and reversal of three-dimensional (3D) magnets. For two-dimensional (2D) magnets, the magnetization reversal always accompanies the collapse of the magnetization even at low temperatures due to intrinsic strong spin fluctuation. We propose a micromagnetic theory that explicitly takes into account the rapid demagnetization and remagnetization dynamics of 2D magnets during magnetization reversal. We apply the theory to a single-domain magnet to illustrate fundamental differences in magnetization trajectories and reversal times for 2D and 3D magnets.
Cite
@article{arxiv.2209.04483,
title = {Magnetization dynamics and reversal of two-dimensional magnets},
author = {Essa M. Ibrahim and Shufeng Zhang},
journal= {arXiv preprint arXiv:2209.04483},
year = {2022}
}