The chiral Hall effect in canted ferromagnets and antiferromagnets
The chiral Hall effect in canted ferromagnets and antiferromagnets
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DOI：
10.1038/s42005-021-00587-3
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发表时间：
2020-07
影响因子：
5.5
通讯作者：
J. Kipp;K. Samanta;F. Lux;M. Merte;D. Go;Jan-Philipp Hanke;M. Redies;F. Freimuth;S. Blügel;M. Ležaić;Y. Mokrousov
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文献类型：
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作者：
J. Kipp;K. Samanta;F. Lux;M. Merte;D. Go;Jan-Philipp Hanke;M. Redies;F. Freimuth;S. Blügel;M. Ležaić;Y. Mokrousov
反常霍尔效应对于我们理解众多磁现象是不可或缺的。这既涉及铁磁材料，也涉及不同类别的反铁磁体，其中除了最近发现的异常晶体霍尔效应之外，非共面反铁磁体中的拓扑霍尔效应在过去几十年中一直是深入研究的主题。在这里，我们发现了通用倾斜旋转系统中出现的霍尔效应的独特风味。我们证明，在倾斜时，反常霍尔效应获得了对自旋之间的印记矢量手征敏感的贡献。我们探索了相应的手性霍尔效应的起源和基本性质，并将其与系统的对称性密切相关。我们的研究结果表明，手性霍尔效应和相应的手性磁光效应成为表征复杂磁体结构和手性相互作用以及跟踪其手性动力学和波动的有用工具。
The anomalous Hall effect has been indispensable in our understanding of numerous magnetic phenomena. This concerns both ferromagnetic materials, as well as diverse classes of antiferromagnets, where in addition to the anomalous and recently discovered crystal Hall effect, the topological Hall effect in noncoplanar antiferromagnets has been a subject of intensive research in the past decades. Here, we uncover a distinct flavor of the Hall effect emerging in generic canted spin systems. We demonstrate that upon canting, the anomalous Hall effect acquires a contribution which is sensitive to the sense of imprinted vector chirality among spins. We explore the origins and basic properties of corresponding chiral Hall effect, and closely tie it to the symmetry properties of the system. Our findings suggest that the chiral Hall effect and corresponding chiral magneto-optical effects emerge as useful tools in characterizing an interplay of structure and chirality in complex magnets, as well as in tracking their chiral dynamics and fluctuations.