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Bibliographic Details
Main Authors:	Hu, Xiaodong, Fakhredine, Amar, Guzman, Roger, Frentrup, Martin, Shi, Jinan, Lampronti, Giulio I., El-Khatib, Sami, Tse, Waichuen, Gorzawski, Laura, Di Bernardo, Angelo, Stelmashenko, Nadia, Zhou, Wu, Egilmez, Mehmet, Li, Danfeng, Mazur, Grzegorz P., Cuoco, Mario, Autieri, Carmine, Robinson, Jason W. A.
Format:	Preprint
Published:	2026
Subjects:	Materials Science Mesoscale and Nanoscale Physics
Online Access:	https://arxiv.org/abs/2602.09479
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Non-collinear Kagome antiferromagnets (AFMs) Mn3X (X = Sn, Ga, Ge, Ir, Pt) can generate an anomalous Hall effect (AHE) despite vanishing net magnetization, enabled by broken time-reversal and inversion symmetries. However, strong in-plane anisotropy has limited studies of the AFM-AHE and electronic applications to coplanar spin configurations. Non-coplanar spin textures in these systems have been realized only in low temperature spin-glass states or at interfaces with heavy metals. Here, we report an intrinsic non-coplanar spin configuration persisting up to 400 K in cubic-phase Mn3Ge, originating from coexisting symmetric and antisymmetric exchange interactions. Competing magnetic states associated with this non-coplanar spin configuration give rise to an unconventional AHE with a magnetic-field-induced sign reversal and a hump-like feature. Our findings establish a platform for non-coplanar magnetism in AFM spintronics.

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