Work

Monolayer Bismuth Ferrite: Topological Antiferromagnetic Metal with Bimeron Spin Textures

Year: 2025

Type: article

Abstract: The competition between dimensionality and ordering in multiferroic materials is of great interest for both fundamental physics and potential applications. Combining first-principles calculations with micromagnetic simulations, we investigate recently synthesized ultrathin perovskite bismuth ferrite (BFO) films. Our numerical results reveal that, at the monolayer limit, the ferroelectricity of BFO is missing because the octahedral distortions are constrained. However, the monolayer bismuth ferrite is a topological antiferromagnetic metal with tunable bimeron magnetic structure. The dual topologically non-trivial characteristics make monolayer bismuth ferrite a multifunctional building block in future spintronic devices.

Source: Chinese Physics Letters

DOI: 10.1088/0256-307x/42/5/057402

Authors: Yun 运 Lu 鲁, Dong 东 Zhang 张, Kai 凯 Chang 常

Institutions: Chinese Academy of Sciences, Institute of Semiconductors, University of Chinese Academy of Sciences, Zhejiang University

Language: English

Topic: Multiferroics and related materials

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

Funders: National Natural Science Foundation of China, Chinese Academy of Sciences