Three-dimensional mapping of the altermagnetic spin splitting in CrSb
Abstract Altermagnetism, a kind of collinear magnetism that is characterized by a momentum-dependent band and spin splitting without net magnetization, has recently attracted considerable interest. Finding altermagnetic materials with large splitting near the Fermi level necessarily requires three-d...
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Nature Portfolio
2025-02-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-56647-7 |
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| author | Guowei Yang Zhanghuan Li Sai Yang Jiyuan Li Hao Zheng Weifan Zhu Ze Pan Yifu Xu Saizheng Cao Wenxuan Zhao Anupam Jana Jiawen Zhang Mao Ye Yu Song Lun-Hui Hu Lexian Yang Jun Fujii Ivana Vobornik Ming Shi Huiqiu Yuan Yongjun Zhang Yuanfeng Xu Yang Liu |
| author_facet | Guowei Yang Zhanghuan Li Sai Yang Jiyuan Li Hao Zheng Weifan Zhu Ze Pan Yifu Xu Saizheng Cao Wenxuan Zhao Anupam Jana Jiawen Zhang Mao Ye Yu Song Lun-Hui Hu Lexian Yang Jun Fujii Ivana Vobornik Ming Shi Huiqiu Yuan Yongjun Zhang Yuanfeng Xu Yang Liu |
| author_sort | Guowei Yang |
| collection | DOAJ |
| description | Abstract Altermagnetism, a kind of collinear magnetism that is characterized by a momentum-dependent band and spin splitting without net magnetization, has recently attracted considerable interest. Finding altermagnetic materials with large splitting near the Fermi level necessarily requires three-dimensional k-space mapping. While this is crucial for spintronic applications and emergent phenomena, it remains challenging. Here, using synchrotron-based angle-resolved photoemission spectroscopy (ARPES), spin-resolved ARPES and model calculations, we uncover a large altermagnetic splitting, up to ~1.0 eV, near the Fermi level in CrSb. We verify its bulk-type g-wave altermagnetism through systematic three-dimensional k-space mapping, which unambiguously reveals the altermagnetic symmetry and associated nodal planes. Spin-resolved ARPES measurements further verify the spin polarizations of the split bands near Fermi level. Tight-binding model analysis indicates that the large altermagnetic splitting arises from strong third-nearest-neighbor hopping mediated by Sb ions. The large band/spin splitting near Fermi level in metallic CrSb, together with its high T N (up to 705 K) and simple spin configuration, paves the way for exploring emergent phenomena and spintronic applications based on altermagnets. |
| format | Article |
| id | doaj-art-be1b742b92854ef7b425bb8c14c926e5 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-be1b742b92854ef7b425bb8c14c926e52025-02-09T12:45:12ZengNature PortfolioNature Communications2041-17232025-02-011611910.1038/s41467-025-56647-7Three-dimensional mapping of the altermagnetic spin splitting in CrSbGuowei Yang0Zhanghuan Li1Sai Yang2Jiyuan Li3Hao Zheng4Weifan Zhu5Ze Pan6Yifu Xu7Saizheng Cao8Wenxuan Zhao9Anupam Jana10Jiawen Zhang11Mao Ye12Yu Song13Lun-Hui Hu14Lexian Yang15Jun Fujii16Ivana Vobornik17Ming Shi18Huiqiu Yuan19Yongjun Zhang20Yuanfeng Xu21Yang Liu22Center for Correlated Matter and School of Physics, Zhejiang UniversityBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesHubei Key Laboratory of Photoelectric Materials and Devices, School of Materials Science and Engineering, Hubei Normal UniversityHubei Key Laboratory of Photoelectric Materials and Devices, School of Materials Science and Engineering, Hubei Normal UniversityCenter for Correlated Matter and School of Physics, Zhejiang UniversityCenter for Correlated Matter and School of Physics, Zhejiang UniversityCenter for Correlated Matter and School of Physics, Zhejiang UniversityCenter for Correlated Matter and School of Physics, Zhejiang UniversityCenter for Correlated Matter and School of Physics, Zhejiang UniversityState Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua UniversityCNR-IOM, TASC Laboratory, Area Science Park-BasovizzaCenter for Correlated Matter and School of Physics, Zhejiang UniversityShanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of SciencesCenter for Correlated Matter and School of Physics, Zhejiang UniversityCenter for Correlated Matter and School of Physics, Zhejiang UniversityState Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua UniversityCNR-IOM, TASC Laboratory, Area Science Park-BasovizzaCNR-IOM, TASC Laboratory, Area Science Park-BasovizzaCenter for Correlated Matter and School of Physics, Zhejiang UniversityCenter for Correlated Matter and School of Physics, Zhejiang UniversityHubei Key Laboratory of Photoelectric Materials and Devices, School of Materials Science and Engineering, Hubei Normal UniversityCenter for Correlated Matter and School of Physics, Zhejiang UniversityCenter for Correlated Matter and School of Physics, Zhejiang UniversityAbstract Altermagnetism, a kind of collinear magnetism that is characterized by a momentum-dependent band and spin splitting without net magnetization, has recently attracted considerable interest. Finding altermagnetic materials with large splitting near the Fermi level necessarily requires three-dimensional k-space mapping. While this is crucial for spintronic applications and emergent phenomena, it remains challenging. Here, using synchrotron-based angle-resolved photoemission spectroscopy (ARPES), spin-resolved ARPES and model calculations, we uncover a large altermagnetic splitting, up to ~1.0 eV, near the Fermi level in CrSb. We verify its bulk-type g-wave altermagnetism through systematic three-dimensional k-space mapping, which unambiguously reveals the altermagnetic symmetry and associated nodal planes. Spin-resolved ARPES measurements further verify the spin polarizations of the split bands near Fermi level. Tight-binding model analysis indicates that the large altermagnetic splitting arises from strong third-nearest-neighbor hopping mediated by Sb ions. The large band/spin splitting near Fermi level in metallic CrSb, together with its high T N (up to 705 K) and simple spin configuration, paves the way for exploring emergent phenomena and spintronic applications based on altermagnets.https://doi.org/10.1038/s41467-025-56647-7 |
| spellingShingle | Guowei Yang Zhanghuan Li Sai Yang Jiyuan Li Hao Zheng Weifan Zhu Ze Pan Yifu Xu Saizheng Cao Wenxuan Zhao Anupam Jana Jiawen Zhang Mao Ye Yu Song Lun-Hui Hu Lexian Yang Jun Fujii Ivana Vobornik Ming Shi Huiqiu Yuan Yongjun Zhang Yuanfeng Xu Yang Liu Three-dimensional mapping of the altermagnetic spin splitting in CrSb Nature Communications |
| title | Three-dimensional mapping of the altermagnetic spin splitting in CrSb |
| title_full | Three-dimensional mapping of the altermagnetic spin splitting in CrSb |
| title_fullStr | Three-dimensional mapping of the altermagnetic spin splitting in CrSb |
| title_full_unstemmed | Three-dimensional mapping of the altermagnetic spin splitting in CrSb |
| title_short | Three-dimensional mapping of the altermagnetic spin splitting in CrSb |
| title_sort | three dimensional mapping of the altermagnetic spin splitting in crsb |
| url | https://doi.org/10.1038/s41467-025-56647-7 |
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