Chiral and flat-band magnetic cluster excitations in a ferromagnetic kagome metal
Autor: | 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. |
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Rok vydání: | 2023 |
Předmět: | |
Zdroj: | Nat. Commun. 15, 1592 (2024) |
Druh dokumentu: | Working Paper |
DOI: | 10.1038/s41467-024-45841-8 |
Popis: | 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. Comment: 6 pages, 5 figures |
Databáze: | arXiv |
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