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| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2602.09479 |
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| _version_ | 1866908825540362240 |
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| author | 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. |
| author_facet | 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. |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_09479 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Competing magnetic states in a non-coplanar Kagome magnet 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. Materials Science Mesoscale and Nanoscale Physics 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. |
| title | Competing magnetic states in a non-coplanar Kagome magnet |
| topic | Materials Science Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2602.09479 |