Chiral and flat-band magnetic cluster excitations in a ferromagnetic kagome metal
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arXiv
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| Auteurs principaux: | , , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2023
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| _version_ | 1866929478883606528 |
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| author | Riberolles, S. X. M. Slade, Tyler J. Han, Tianxiong Li, Bing Abernathy, D. L. Canfield, P. C. Ueland, B. G. Orth, P. P. Ke, Liqin McQueeney, R. J. |
| author_facet | Riberolles, S. X. M. Slade, Tyler J. Han, Tianxiong Li, Bing Abernathy, D. L. Canfield, P. C. Ueland, B. G. Orth, P. P. Ke, Liqin McQueeney, R. J. |
| contents | TbMn6Sn6 is a metallic ferrimagnet that displays signatures of band topology arising from a combination of uniaxial ferromagnetism and spin-orbit coupling within its Mn kagome layers. Whereas the low energy magnetic excitations can be described as collective spin waves using a local moment Heisenberg model, sharply defined optical and flat-band collective magnon modes are not observed. In their place, we find overdamped chiral and flat-band spin correlations that are localized to hexagonal plaquettes within the kagome layer. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2302_04846 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Chiral and flat-band magnetic cluster excitations in a ferromagnetic kagome metal Riberolles, S. X. M. Slade, Tyler J. Han, Tianxiong Li, Bing Abernathy, D. L. Canfield, P. C. Ueland, B. G. Orth, P. P. Ke, Liqin McQueeney, R. J. Strongly Correlated Electrons TbMn6Sn6 is a metallic ferrimagnet that displays signatures of band topology arising from a combination of uniaxial ferromagnetism and spin-orbit coupling within its Mn kagome layers. Whereas the low energy magnetic excitations can be described as collective spin waves using a local moment Heisenberg model, sharply defined optical and flat-band collective magnon modes are not observed. In their place, we find overdamped chiral and flat-band spin correlations that are localized to hexagonal plaquettes within the kagome layer. |
| title | Chiral and flat-band magnetic cluster excitations in a ferromagnetic kagome metal |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2302.04846 |