Spin-frame field theory of a three-sublattice antiferromagnet
Fuente:
arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| _version_ | 1866909346066071552 |
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| author | Pradenas, Bastian Tchernyshyov, Oleg |
| author_facet | Pradenas, Bastian Tchernyshyov, Oleg |
| contents | We present a nonlinear field theory of a three-sublattice hexagonal antiferromagnet. The order parameter is the spin frame, an orthogonal triplet of vectors related to sublattice magnetizations and spin chirality. The exchange energy, quadratic in spin-frame gradients, has three coupling constants, only two of which manifest themselves in the bulk. As a result, the three spin-wave velocities satisfy a universal relation. Vortices generally have an elliptical shape with the eccentricity determined by the Lamé parameters. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_16853 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Spin-frame field theory of a three-sublattice antiferromagnet Pradenas, Bastian Tchernyshyov, Oleg Strongly Correlated Electrons Pattern Formation and Solitons We present a nonlinear field theory of a three-sublattice hexagonal antiferromagnet. The order parameter is the spin frame, an orthogonal triplet of vectors related to sublattice magnetizations and spin chirality. The exchange energy, quadratic in spin-frame gradients, has three coupling constants, only two of which manifest themselves in the bulk. As a result, the three spin-wave velocities satisfy a universal relation. Vortices generally have an elliptical shape with the eccentricity determined by the Lamé parameters. |
| title | Spin-frame field theory of a three-sublattice antiferromagnet |
| topic | Strongly Correlated Electrons Pattern Formation and Solitons |
| url | https://arxiv.org/abs/2307.16853 |