Spin demons in d-wave altermagnets
Fuente:
arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866908586115858432 |
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| author | Gunnink, Pieter M. Sinova, Jairo Mook, Alexander |
| author_facet | Gunnink, Pieter M. Sinova, Jairo Mook, Alexander |
| contents | Demons are a type of plasmons, which consist of out-of-phase oscillations of electrons in different bands. Here, we show that $d$-wave altermagnets, a recently discovered class of collinear magnetism, naturally realize a spin demon, which consists of out-of-phase movement of the two spin species. The spin demon lives outside of the particle-hole continuum of one of the spin species, and is therefore significantly underdamped, reaching quality factors of $>10$. We show that the spin demon carries a magnetic moment, which inherits the $d$-wave symmetry. Finally, we consider both three and two dimensional $d$-wave altermagnets, and show that spin demons exists in both. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_11062 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Spin demons in d-wave altermagnets Gunnink, Pieter M. Sinova, Jairo Mook, Alexander Strongly Correlated Electrons Demons are a type of plasmons, which consist of out-of-phase oscillations of electrons in different bands. Here, we show that $d$-wave altermagnets, a recently discovered class of collinear magnetism, naturally realize a spin demon, which consists of out-of-phase movement of the two spin species. The spin demon lives outside of the particle-hole continuum of one of the spin species, and is therefore significantly underdamped, reaching quality factors of $>10$. We show that the spin demon carries a magnetic moment, which inherits the $d$-wave symmetry. Finally, we consider both three and two dimensional $d$-wave altermagnets, and show that spin demons exists in both. |
| title | Spin demons in d-wave altermagnets |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2504.11062 |