Emergent zero-field anomalous Hall effect in a reconstructed rutile antiferromagnetic metal

Author:

Wang MengORCID,Tanaka Katsuhiro,Sakai Shiro,Wang ZiqianORCID,Deng KeORCID,Lyu YingjieORCID,Li Cong,Tian Di,Shen ShengchunORCID,Ogawa Naoki,Kanazawa NaoyaORCID,Yu PuORCID,Arita RyotaroORCID,Kagawa Fumitaka

Abstract

AbstractThe anomalous Hall effect (AHE) that emerges in antiferromagnetic metals shows intriguing physics and offers numerous potential applications. Magnets with a rutile crystal structure have recently received attention as a possible platform for a collinear-antiferromagnetism-induced AHE. RuO2 is a prototypical candidate material, however the AHE is prohibited at zero field by symmetry because of the high-symmetry [001] direction of the Néel vector at the ground state. Here, we show AHE at zero field in Cr-doped rutile, Ru0.8Cr0.2O2. The magnetization, transport and density functional theory calculations indicate that appropriate doping of Cr at Ru sites reconstructs the collinear antiferromagnetism in RuO2, resulting in a rotation of the Néel vector from [001] to [110] while maintaining a collinear antiferromagnetic state. The AHE with vanishing net moment in the Ru0.8Cr0.2O2 exhibits an orientation dependence consistent with the [110]-oriented Hall vector. These results demonstrate that material engineering by doping is a useful approach to manipulate AHE in antiferromagnetic metals.

Publisher

Springer Science and Business Media LLC

Subject

General Physics and Astronomy,General Biochemistry, Genetics and Molecular Biology,General Chemistry,Multidisciplinary

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Review on spin-split antiferromagnetic spintronics;Applied Physics Letters;2024-01-15

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