The chiral Hall effect in canted ferromagnets and antiferromagnets

• Published in: arXiv.org
• Main Authors: Kipp, J, Samanta, K, Lux, F R, Merte, M, J -P Hanke, Redies, M, Freimuth, F, Blügel, S, Ležaić, M, Mokrousov, Y
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 01.04.2021
• Subjects: Antiferromagnetism; Chiral dynamics; Chirality; Electromagnetism; Ferromagnetic materials; Filing; Flavors; Gamma rays; Hall effect; Magnetism; Magnets; Physics - Materials Science; Physics - Mesoscale and Nanoscale Physics
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.2007.01529

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 crystal Hall effects, the topological Hall effect in non-coplanar antiferromagnets has been a subject of intensive research in the past decades. Here, we uncover a new flavour of the anomalous Hall effect in canted spin systems. Using advanced theoretical tools 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 novel versatile tools in characterizing an interplay of structure and chirality in complex magnets, as well as in tracking their chiral dynamics and fluctuations.