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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/2602.14790 |
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| _version_ | 1866918341024677888 |
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| author | Yao, Weiliang Ye, Feng Morgan, Zachary J. Abernathy, Douglas L. Liu, Ruixian Xu, Sijie Gao, Yuxiang Allen, Kevin Fang, Yuan Morosan, Emilia Si, Qimiao Dai, Pengcheng |
| author_facet | Yao, Weiliang Ye, Feng Morgan, Zachary J. Abernathy, Douglas L. Liu, Ruixian Xu, Sijie Gao, Yuxiang Allen, Kevin Fang, Yuan Morosan, Emilia Si, Qimiao Dai, Pengcheng |
| contents | Altermagnets are collinear magnetic materials with 'alter'nating local crystalline environments, characterized by joint spin and crystalline symmetries that enable ferromagnetic-like transport properties but with vanishing net magnetization. Hexagonal FeS (h-FeS) is a recently identified altermagnet candidate that shows a spontaneous anomalous Hall effect (AHE) accompanied by a tiny net magnetization. Here, we show that both the spontaneous AHE and magnetization can be effectively suppressed by an in-plane compressive strain. Since neutron diffraction measurements show that the applied uniaxial strain only modifies the in-plane domain population but does not affect the in-plane magnetic structure, the major effect of the applied strain is to tune the small $c$-axis ferromagnetic moment. Our results demonstrate a strong correlation between the tiny net magnetization and the spontaneous AHE in h-FeS, and show that uniaxial strain provides an effective knob to tune both properties in this altermagnet candidate for spintronic applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_14790 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Uniaxial strain tuned magnetism of the altermagnet candidate h-FeS Yao, Weiliang Ye, Feng Morgan, Zachary J. Abernathy, Douglas L. Liu, Ruixian Xu, Sijie Gao, Yuxiang Allen, Kevin Fang, Yuan Morosan, Emilia Si, Qimiao Dai, Pengcheng Materials Science Strongly Correlated Electrons Altermagnets are collinear magnetic materials with 'alter'nating local crystalline environments, characterized by joint spin and crystalline symmetries that enable ferromagnetic-like transport properties but with vanishing net magnetization. Hexagonal FeS (h-FeS) is a recently identified altermagnet candidate that shows a spontaneous anomalous Hall effect (AHE) accompanied by a tiny net magnetization. Here, we show that both the spontaneous AHE and magnetization can be effectively suppressed by an in-plane compressive strain. Since neutron diffraction measurements show that the applied uniaxial strain only modifies the in-plane domain population but does not affect the in-plane magnetic structure, the major effect of the applied strain is to tune the small $c$-axis ferromagnetic moment. Our results demonstrate a strong correlation between the tiny net magnetization and the spontaneous AHE in h-FeS, and show that uniaxial strain provides an effective knob to tune both properties in this altermagnet candidate for spintronic applications. |
| title | Uniaxial strain tuned magnetism of the altermagnet candidate h-FeS |
| topic | Materials Science Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2602.14790 |