Universal theory of domain-wall width in multi-sublattice Heisenberg magnets
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866917555831046144 |
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| author | Lendínez, José M. Yanguas, Marta Griepe, Theodor Saur, Michael Otxoa, Rubén M. Rózsa, Levente Atxitia, Unai |
| author_facet | Lendínez, José M. Yanguas, Marta Griepe, Theodor Saur, Michael Otxoa, Rubén M. Rózsa, Levente Atxitia, Unai |
| contents | We propose a universal expression for the domain-wall width in generic multi-sublattice Heisenberg magnets, applicable to ferro-, antiferro-, and ferrimagnetic orders. The result follows from an exact connection between the domain-wall profile and the long-wavelength spin-wave dispersion, yielding a unified framework for describing magnetic textures across distinct ordering types. The predictions show excellent quantitative agreement with large-scale atomistic spin dynamics simulations over a broad range of exchange and anisotropy values and spin multi-sublattice structures, including three-dimensional rock-salt-type magnets and two-dimensional honeycomb and kagome ferromagnets. Moreover, we establish a general microscopic foundation for the temperature dependence of the domain-wall width. Our approach offers a powerful tool for understanding domain-wall profiles in complex spin systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2606_02360 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Universal theory of domain-wall width in multi-sublattice Heisenberg magnets Lendínez, José M. Yanguas, Marta Griepe, Theodor Saur, Michael Otxoa, Rubén M. Rózsa, Levente Atxitia, Unai Materials Science Mesoscale and Nanoscale Physics We propose a universal expression for the domain-wall width in generic multi-sublattice Heisenberg magnets, applicable to ferro-, antiferro-, and ferrimagnetic orders. The result follows from an exact connection between the domain-wall profile and the long-wavelength spin-wave dispersion, yielding a unified framework for describing magnetic textures across distinct ordering types. The predictions show excellent quantitative agreement with large-scale atomistic spin dynamics simulations over a broad range of exchange and anisotropy values and spin multi-sublattice structures, including three-dimensional rock-salt-type magnets and two-dimensional honeycomb and kagome ferromagnets. Moreover, we establish a general microscopic foundation for the temperature dependence of the domain-wall width. Our approach offers a powerful tool for understanding domain-wall profiles in complex spin systems. |
| title | Universal theory of domain-wall width in multi-sublattice Heisenberg magnets |
| topic | Materials Science Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2606.02360 |