- Letter
Electrically controllable topological magnetism in multiferroic antiferromagnetic
Phys. Rev. B 109, L060402 – Published 5 February, 2024
DOI: https://doi.org/10.1103/PhysRevB.109.L060402
Abstract
We propose to realize the nonvolatile four-state antiferromagnetic (AFM) skyrmions in multiferroic oxide system with underlying asymmetry. Subsequently, through strain-mediated magnetic phase engineering, we find that AFM skyrmions can be obtained in bulk . Moreover, we also explore possible existence of AFM skyrmions in the () heterostructures via ab initio calculations, where AFM skyrmions can still survive. Eventually, we realize four-state AFM skyrmions (P↑,L↓), (P↑,L↑), (P↓,L↓), and (P↓,L↑) with different chirality induced by polarization (P) switching and polarity arising from magnetization (L) reversal in multiferroic . In this letter, we provide an avenue toward electric-field control of AFM skyrmions in multiferroic oxides and offer perspectives for designing AFM skyrmion-based spintronic devices.