Magnetic Bloch Skyrmion Transport by Electric Fields in a Composite Bilayer

TL;DR

This paper demonstrates a novel method to manipulate magnetic Bloch Skyrmions using electric fields in a composite bilayer, enabling controlled skyrmion transport via a movable electric field source.

Contribution

It introduces a mechanical approach to control skyrmion movement through electric fields in a bilayer, highlighting the importance of electric field source velocity for stability and efficiency.

Findings

Electric fields can effectively generate and manipulate skyrmions.

Transport stability depends on the velocity of the electric field source.

High-speed electric field operation impacts skyrmion control.

Abstract

We investigate a mechanical method to manipulate magnetic Bloch Skyrmions by applying an electric field in a composite chiral-magnetic (CM)/ferroelectric (FE) bilayer. The magnetoelectric coupling at the interface allows the electric field to stimulate magnetic ordering. Therefore it offers the possibility to generate Skyrmions [Phys. Rev. B 94, 014311 (2016)]. Here, we design a movable and localized electric field source to drive skyrmion transport along the bilayer. A traveling velocity of the electric field source must be carefully chosen to show the stability and effciency of this process. The effects of high speed operation will be discussed.