Altermagnetism with non-collinear spins
Abstract Altermagnetism is introduced as a category of magnetic states with ‘collinear’ antiferromagnetic spins and alternating variations of local structures around spins in such a way that the symmetry allows typical ferromagnetic behaviors. Altermagnets exhibiting ferromagnetic behaviors without...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-01-01
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| Series: | npj Quantum Materials |
| Online Access: | https://doi.org/10.1038/s41535-024-00626-6 |
| _version_ | 1827370031917301760 |
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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 Altermagnetism is introduced as a category of magnetic states with ‘collinear’ antiferromagnetic spins and alternating variations of local structures around spins in such a way that the symmetry allows typical ferromagnetic behaviors. Altermagnets exhibiting ferromagnetic behaviors without any external perturbations (type-I) turn out to belong to the ferromagnetic point group. Other altermagnets (type-II and type-III) can have ferromagnetic behaviors only with external perturbations such as electric current or stress, which conserve parity-time-reversal (PT) symmetry. All types of altermagnets themselves have broken PT symmetry. The concept of altermagnetism can be extended to accommodate non-collinear spins and multiple local-structure variations. |
| first_indexed | 2024-03-08T10:01:28Z |
| format | Article |
| id | doaj.art-0f54f970ed2446a0bba6cc48ce3448d8 |
| institution | Directory Open Access Journal |
| issn | 2397-4648 |
| language | English |
| last_indexed | 2024-03-08T10:01:28Z |
| publishDate | 2024-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Materials |
| spelling | doaj.art-0f54f970ed2446a0bba6cc48ce3448d82024-01-29T10:55:36ZengNature Portfolionpj Quantum Materials2397-46482024-01-01911610.1038/s41535-024-00626-6Altermagnetism with non-collinear spinsSang-Wook Cheong0Fei-Ting Huang1Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers UniversityRutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers UniversityAbstract Altermagnetism is introduced as a category of magnetic states with ‘collinear’ antiferromagnetic spins and alternating variations of local structures around spins in such a way that the symmetry allows typical ferromagnetic behaviors. Altermagnets exhibiting ferromagnetic behaviors without any external perturbations (type-I) turn out to belong to the ferromagnetic point group. Other altermagnets (type-II and type-III) can have ferromagnetic behaviors only with external perturbations such as electric current or stress, which conserve parity-time-reversal (PT) symmetry. All types of altermagnets themselves have broken PT symmetry. The concept of altermagnetism can be extended to accommodate non-collinear spins and multiple local-structure variations.https://doi.org/10.1038/s41535-024-00626-6 |
| spellingShingle | Sang-Wook Cheong Fei-Ting Huang Altermagnetism with non-collinear spins npj Quantum Materials |
| title | Altermagnetism with non-collinear spins |
| title_full | Altermagnetism with non-collinear spins |
| title_fullStr | Altermagnetism with non-collinear spins |
| title_full_unstemmed | Altermagnetism with non-collinear spins |
| title_short | Altermagnetism with non-collinear spins |
| title_sort | altermagnetism with non collinear spins |
| url | https://doi.org/10.1038/s41535-024-00626-6 |
| work_keys_str_mv | AT sangwookcheong altermagnetismwithnoncollinearspins AT feitinghuang altermagnetismwithnoncollinearspins |