Electric field switching of altermagnetic spin-splitting in multiferroic skyrmions
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arXiv
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| Natura: | Preprint |
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2026
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| _version_ | 1866914245628657664 |
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| author | Wang, Gui Li, Yuhang Li, Bin Chen, Xianzhe Dong, Jianting Chen, Weizhao Chen, Xiaobing Zheng, Naifu Guo, Maosen Tong, Aomei Bai, Hua Zhang, Hongrui Gao, Yifan Shen, Kaiwen Zhu, Jiangyuan Han, Jiahao Wei, Yingfen Jiang, Hao Zhang, Xumeng Wang, Ming Xu, Kebiao Shi, Wu Wang, Pengfei Zhang, Jia Liu, Qihang Song, Cheng Liu, Qi Xie, Xincheng Liu, Ming |
| author_facet | Wang, Gui Li, Yuhang Li, Bin Chen, Xianzhe Dong, Jianting Chen, Weizhao Chen, Xiaobing Zheng, Naifu Guo, Maosen Tong, Aomei Bai, Hua Zhang, Hongrui Gao, Yifan Shen, Kaiwen Zhu, Jiangyuan Han, Jiahao Wei, Yingfen Jiang, Hao Zhang, Xumeng Wang, Ming Xu, Kebiao Shi, Wu Wang, Pengfei Zhang, Jia Liu, Qihang Song, Cheng Liu, Qi Xie, Xincheng Liu, Ming |
| contents | Magnetic skyrmions are localized magnetic structures that retain their shape and stability over time, thanks to their topological nature. Recent theoretical and experimental progress has laid the groundwork for understanding magnetic skyrmions characterized by negligible net magnetization and ultrafast dynamics. Notably, skyrmions emerging in materials with altermagnetism, a novel magnetic phase featuring lifted Kramers degeneracy-have remained unreported until now. In this study, we demonstrate that BiFeO3, a multiferroic renowned for its strong coupling between ferroelectricity and magnetism, can transit from a spin cycloid to a Neel-type skyrmion under antidamping spin-orbit torque at room temperature. Strikingly, the altermagnetic spin splitting within BiFeO3 skyrmion can be reversed through the application of an electric field, revealed via the Circular photogalvanic effect. This quasiparticle, which possesses a neutral topological charge, holds substantial promise for diverse applications-most notably, enabling the development of unconventional computing systems with low power consumption and magnetoelectric controllability. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_06738 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Electric field switching of altermagnetic spin-splitting in multiferroic skyrmions Wang, Gui Li, Yuhang Li, Bin Chen, Xianzhe Dong, Jianting Chen, Weizhao Chen, Xiaobing Zheng, Naifu Guo, Maosen Tong, Aomei Bai, Hua Zhang, Hongrui Gao, Yifan Shen, Kaiwen Zhu, Jiangyuan Han, Jiahao Wei, Yingfen Jiang, Hao Zhang, Xumeng Wang, Ming Xu, Kebiao Shi, Wu Wang, Pengfei Zhang, Jia Liu, Qihang Song, Cheng Liu, Qi Xie, Xincheng Liu, Ming Materials Science Applied Physics Magnetic skyrmions are localized magnetic structures that retain their shape and stability over time, thanks to their topological nature. Recent theoretical and experimental progress has laid the groundwork for understanding magnetic skyrmions characterized by negligible net magnetization and ultrafast dynamics. Notably, skyrmions emerging in materials with altermagnetism, a novel magnetic phase featuring lifted Kramers degeneracy-have remained unreported until now. In this study, we demonstrate that BiFeO3, a multiferroic renowned for its strong coupling between ferroelectricity and magnetism, can transit from a spin cycloid to a Neel-type skyrmion under antidamping spin-orbit torque at room temperature. Strikingly, the altermagnetic spin splitting within BiFeO3 skyrmion can be reversed through the application of an electric field, revealed via the Circular photogalvanic effect. This quasiparticle, which possesses a neutral topological charge, holds substantial promise for diverse applications-most notably, enabling the development of unconventional computing systems with low power consumption and magnetoelectric controllability. |
| title | Electric field switching of altermagnetic spin-splitting in multiferroic skyrmions |
| topic | Materials Science Applied Physics |
| url | https://arxiv.org/abs/2601.06738 |