Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session Y70: New Order in Ferroelectrics and Multiferroics
8:00 AM–10:24 AM,
Friday, March 18, 2022
Room: Hyatt Regency Hotel -Jackson Park B
Sponsoring
Unit:
DMP
Chair: Minseong Lee, Los Alamos National Lab
Abstract: Y70.00001 : Exploring non-collinear magnetic textures in multiferroics
8:00 AM–8:36 AM
Presenter:
Bertrand Dupé
(University of Liège)
Author:
Bertrand Dupé
(University of Liège)
Recently, their antiferromagnetic (AFM) counterparts have drawn attention due to their fast dynamics and their robustness against stray fields [3]. AFM skyrmion are characterized by a non-zero winding number associated to the AFM vector L. Although AFM skyrmions in a synthetic antiferromagnet have recently been reported, AFM skyrmions are still elusive in single-phase antiferromagnets.
Here, we first review the different stabilization and nucleation mechanisms of FM skyrmions in metals [4,5]. Both FM and AFM skyrmions are stabilized by similar interactions: the magnetic exchange interaction, the Dzyaloshinskii-Moriya (DM) interaction and the magnetic anisotropy. Via density functional theory, we explore the magnetic ground state of the AFM multiferroics BiFeO3 as a function of structure and strain [6]. For each case, the magnetic exchange, the DM interaction and the magnetocrystalline anisotropy energy are extracted.
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