Altermagnetic spin-split Fermi surfaces in CrSb revealed by quantum oscillation measurements
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arXiv
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| Autores principales: | , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866914283408850944 |
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| author | Terashima, Taichi Hattori, Yuya Graf, David Urata, Takahiro Yoshioka, Tomoki Hattori, Wataru Ikuta, Hiroshi Ikeda, Hiroaki |
| author_facet | Terashima, Taichi Hattori, Yuya Graf, David Urata, Takahiro Yoshioka, Tomoki Hattori, Wataru Ikuta, Hiroshi Ikeda, Hiroaki |
| contents | Altermagnets, a class of collinear magnets defined by their spin-split electronic bands, are a focus of intense research, where a key challenge is to experimentally verify this unique band structure as a bulk property. Here, we report a comprehensive quantum oscillation study on the prototypical altermagnet CrSb. By combining high-field magnetotransport and torque measurements with DFT+$U$ calculations including spin-orbit coupling, we successfully identify a multitude of quantum-oscillation frequencies originating from four spin-non-degenerate bands. These results provide definitive, bulk-sensitive evidence for the altermagnetic spin-split Fermi surface of CrSb, which provides a firm foundation for exploring its novel electronic properties. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_19105 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Altermagnetic spin-split Fermi surfaces in CrSb revealed by quantum oscillation measurements Terashima, Taichi Hattori, Yuya Graf, David Urata, Takahiro Yoshioka, Tomoki Hattori, Wataru Ikuta, Hiroshi Ikeda, Hiroaki Materials Science Altermagnets, a class of collinear magnets defined by their spin-split electronic bands, are a focus of intense research, where a key challenge is to experimentally verify this unique band structure as a bulk property. Here, we report a comprehensive quantum oscillation study on the prototypical altermagnet CrSb. By combining high-field magnetotransport and torque measurements with DFT+$U$ calculations including spin-orbit coupling, we successfully identify a multitude of quantum-oscillation frequencies originating from four spin-non-degenerate bands. These results provide definitive, bulk-sensitive evidence for the altermagnetic spin-split Fermi surface of CrSb, which provides a firm foundation for exploring its novel electronic properties. |
| title | Altermagnetic spin-split Fermi surfaces in CrSb revealed by quantum oscillation measurements |
| topic | Materials Science |
| url | https://arxiv.org/abs/2601.19105 |