Designing Spin Symmetry for Altermagnetism with Strong Magnetoelectric Coupling
Abstract Altermagnets, a recently identified class of collinear magnets, exhibit unique properties such as zero net magnetization and spin polarization dictated by lattice symmetry, making them a subject of intense research. In contrast to conventional strategies for inducing altermagnetism in antif...
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| Format: | Article |
| Language: | English |
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Wiley
2025-08-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202503235 |
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| author | Wei Sun Wenxuan Wang Changhong Yang Shifeng Huang Ning Ding Shuai Dong Zhenxiang Cheng |
| author_facet | Wei Sun Wenxuan Wang Changhong Yang Shifeng Huang Ning Ding Shuai Dong Zhenxiang Cheng |
| author_sort | Wei Sun |
| collection | DOAJ |
| description | Abstract Altermagnets, a recently identified class of collinear magnets, exhibit unique properties such as zero net magnetization and spin polarization dictated by lattice symmetry, making them a subject of intense research. In contrast to conventional strategies for inducing altermagnetism in antiferromagnets that rely on manipulating real‐space symmetry, this work introduces a novel and general approach to achieving altermagnetism by modulating spin‐space symmetry. Through a combination of tight‐binding models and first‐principles calculations, the microscopic origin of altermagnetism driven by spin‐space symmetry is uncovered, and the mechanism underlying enhanced spin splitting is identified. Furthermore, it is demonstrated that this spin‐space modulation can synergistically interact with ferroelectricity, enabling a spin symmetry‐dependent magnetoelectric coupling mechanism that is distinct from conventional multiferroics. This unique coupling is validated by the magneto‐optical Kerr effect, providing a robust theoretical foundation for the development of next‐generation spintronic devices that harness the potential of altermagnetism. |
| format | Article |
| id | doaj-art-8b7a7aeeaa05466b8da5dca34bdb8817 |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-8b7a7aeeaa05466b8da5dca34bdb88172025-08-20T11:56:10ZengWileyAdvanced Science2198-38442025-08-011230n/an/a10.1002/advs.202503235Designing Spin Symmetry for Altermagnetism with Strong Magnetoelectric CouplingWei Sun0Wenxuan Wang1Changhong Yang2Shifeng Huang3Ning Ding4Shuai Dong5Zhenxiang Cheng6Shandong Provincial Key Laboratory of Green and Intelligent Building Materials University of Jinan Jinan 250022 ChinaSchool of Material Science and Engineering University of Jinan Jinan Shandong 250022 ChinaShandong Provincial Key Laboratory of Green and Intelligent Building Materials University of Jinan Jinan 250022 ChinaShandong Provincial Key Laboratory of Green and Intelligent Building Materials University of Jinan Jinan 250022 ChinaKey Laboratory of Quantum Materials and Devices of Ministry of Education School of Physics Southeast University Nanjing 211189 ChinaKey Laboratory of Quantum Materials and Devices of Ministry of Education School of Physics Southeast University Nanjing 211189 ChinaInstitute for Superconducting & Electronic Materials Australian Institute of Innovative Materials University of Wollongong Innovation Campus, Squires Way North Wollongong New South Wales 2500 AustraliaAbstract Altermagnets, a recently identified class of collinear magnets, exhibit unique properties such as zero net magnetization and spin polarization dictated by lattice symmetry, making them a subject of intense research. In contrast to conventional strategies for inducing altermagnetism in antiferromagnets that rely on manipulating real‐space symmetry, this work introduces a novel and general approach to achieving altermagnetism by modulating spin‐space symmetry. Through a combination of tight‐binding models and first‐principles calculations, the microscopic origin of altermagnetism driven by spin‐space symmetry is uncovered, and the mechanism underlying enhanced spin splitting is identified. Furthermore, it is demonstrated that this spin‐space modulation can synergistically interact with ferroelectricity, enabling a spin symmetry‐dependent magnetoelectric coupling mechanism that is distinct from conventional multiferroics. This unique coupling is validated by the magneto‐optical Kerr effect, providing a robust theoretical foundation for the development of next‐generation spintronic devices that harness the potential of altermagnetism.https://doi.org/10.1002/advs.202503235altermagnetismmagnetoelectric couplingmultiferroicssliding ferroelectricity |
| spellingShingle | Wei Sun Wenxuan Wang Changhong Yang Shifeng Huang Ning Ding Shuai Dong Zhenxiang Cheng Designing Spin Symmetry for Altermagnetism with Strong Magnetoelectric Coupling Advanced Science altermagnetism magnetoelectric coupling multiferroics sliding ferroelectricity |
| title | Designing Spin Symmetry for Altermagnetism with Strong Magnetoelectric Coupling |
| title_full | Designing Spin Symmetry for Altermagnetism with Strong Magnetoelectric Coupling |
| title_fullStr | Designing Spin Symmetry for Altermagnetism with Strong Magnetoelectric Coupling |
| title_full_unstemmed | Designing Spin Symmetry for Altermagnetism with Strong Magnetoelectric Coupling |
| title_short | Designing Spin Symmetry for Altermagnetism with Strong Magnetoelectric Coupling |
| title_sort | designing spin symmetry for altermagnetism with strong magnetoelectric coupling |
| topic | altermagnetism magnetoelectric coupling multiferroics sliding ferroelectricity |
| url | https://doi.org/10.1002/advs.202503235 |
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