Creation of Skyrmions by Electric Field on Chiral-Lattice Magnetic Insulators

TL;DR

This paper proposes a theoretical method to create magnetic skyrmions rapidly using electric fields on chiral-lattice magnetic insulators, enabling low-energy data storage applications.

Contribution

It introduces a novel electric-field-based technique for skyrmion creation in magnetic insulators, advancing skyrmion-based device research.

Findings

Skyrmions can be created within nanoseconds using electric fields.

The method exploits coupling between skyrmion spins and electric polarizations.

Potential for low-energy magnetic storage devices without Joule heating.

Abstract

We theoretically propose that magnetic skyrmion, nanometric spin vortex characterized by a quantized topological number, can be electrically created on a thin-film specimen of chiral-lattice magnetic insulator within a few nanoseconds by applying an electric field via an electrode tip taking advantage of coupling between noncollinear skyrmion spins and electric polarizations. This finding will pave a route to utilizing multiferroic skyrmions as information carriers for low-energy-consuming magnetic storage devices without Joule-heating energy losses.