Topological changes of two-dimensional magnetic textures

TL;DR

This paper studies how magnetic vortices and skyrmions in two-dimensional materials interact with spin-polarized currents, revealing microscopic topological changes driven by electron-spin structures.

Contribution

It introduces a coupled Landau-Lifshitz and Schrödinger model to analyze topological dynamics of magnetic textures at microscopic scales.

Findings

Topological changes are triggered by electron-spin structure nucleation.

Microscopic time and length scales are critical for topology evolution.

Electron-spin interactions induce nontrivial topological transformations.

Abstract

We investigate the interaction of magnetic vortices and skyrmions with a spin-polarized current. In a square lattice, fixed classical spins and quantum itinerant electrons, evolve according to the coupled Landau-Lifshitz and Schr\"odinger equations. Changes in the topology occur at microscopic time and length scales, and are shown to be triggered by the nucleation of a nontrivial electron-spin structure at the vortex core.