Altermagnetism classification
Abstract Altermagnets are magnetic states with fully compensated spins and broken PT (PT: parity times time reversal) symmetry (i.e., spin-split bands). We classify three kinds of altermagnets in terms of broken P and T. Furthermore, strong altermagnets have spin-split bands without spin-orbit coupl...
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| Format: | Article |
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Nature Portfolio
2025-04-01
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| Series: | npj Quantum Materials |
| Online Access: | https://doi.org/10.1038/s41535-025-00756-5 |
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| _version_ | 1850201663999049728 |
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| author | Sang-Wook Cheong Fei-Ting Huang |
| author_facet | Sang-Wook Cheong Fei-Ting Huang |
| author_sort | Sang-Wook Cheong |
| collection | DOAJ |
| description | Abstract Altermagnets are magnetic states with fully compensated spins and broken PT (PT: parity times time reversal) symmetry (i.e., spin-split bands). We classify three kinds of altermagnets in terms of broken P and T. Furthermore, strong altermagnets have spin-split bands without spin-orbit coupling (SOC), and weak altermagnets has spin-split bands only with non-zero SOC. These strong vs. weak altermagnets can be identified from the total number of symmetric spin rotation operations. |
| format | Article |
| id | doaj-art-b15777600bb641eaa0999131cf702cdb |
| institution | OA Journals |
| issn | 2397-4648 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Materials |
| spelling | doaj-art-b15777600bb641eaa0999131cf702cdb2025-08-20T02:11:57ZengNature Portfolionpj Quantum Materials2397-46482025-04-011011610.1038/s41535-025-00756-5Altermagnetism classificationSang-Wook Cheong0Fei-Ting Huang1Keck Center for Quantum Magnetism and Department of Physics and Astronomy, Rutgers UniversityKeck Center for Quantum Magnetism and Department of Physics and Astronomy, Rutgers UniversityAbstract Altermagnets are magnetic states with fully compensated spins and broken PT (PT: parity times time reversal) symmetry (i.e., spin-split bands). We classify three kinds of altermagnets in terms of broken P and T. Furthermore, strong altermagnets have spin-split bands without spin-orbit coupling (SOC), and weak altermagnets has spin-split bands only with non-zero SOC. These strong vs. weak altermagnets can be identified from the total number of symmetric spin rotation operations.https://doi.org/10.1038/s41535-025-00756-5 |
| spellingShingle | Sang-Wook Cheong Fei-Ting Huang Altermagnetism classification npj Quantum Materials |
| title | Altermagnetism classification |
| title_full | Altermagnetism classification |
| title_fullStr | Altermagnetism classification |
| title_full_unstemmed | Altermagnetism classification |
| title_short | Altermagnetism classification |
| title_sort | altermagnetism classification |
| url | https://doi.org/10.1038/s41535-025-00756-5 |
| work_keys_str_mv | AT sangwookcheong altermagnetismclassification AT feitinghuang altermagnetismclassification |