Spin Wave Dispersion of the van der Waals Antiferromagnet NiPS$_3$
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arXiv
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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866914511639805952 |
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| author | Das, Ritesh Teuling, Rob den Bondarenko, Artem V. Tartakovskaya, Elena V. Bauer, Gerrit E. W. Ferrer, Jaime Blanter, Yaroslav M. |
| author_facet | Das, Ritesh Teuling, Rob den Bondarenko, Artem V. Tartakovskaya, Elena V. Bauer, Gerrit E. W. Ferrer, Jaime Blanter, Yaroslav M. |
| contents | We calculate the magnon dispersion spectra of the two-dimensional zigzag van der Waals antiferromagnet NiPS$_3$ for monolayer, bilayer, and bulk systems as a function of an external magnetic field. We calculate the exchange and anisotropy constants in our spin model by first principles. We can accurately explain the transition from a collinear to a canted ground state for a magnetic field applied normal to the (in-plane) easy-axis, and a spin-flop transition when the field is parallel to it. A topologically protected Dirac nodal line is present and robust with respect to both external and anisotropy fields. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_20540 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Spin Wave Dispersion of the van der Waals Antiferromagnet NiPS$_3$ Das, Ritesh Teuling, Rob den Bondarenko, Artem V. Tartakovskaya, Elena V. Bauer, Gerrit E. W. Ferrer, Jaime Blanter, Yaroslav M. Mesoscale and Nanoscale Physics We calculate the magnon dispersion spectra of the two-dimensional zigzag van der Waals antiferromagnet NiPS$_3$ for monolayer, bilayer, and bulk systems as a function of an external magnetic field. We calculate the exchange and anisotropy constants in our spin model by first principles. We can accurately explain the transition from a collinear to a canted ground state for a magnetic field applied normal to the (in-plane) easy-axis, and a spin-flop transition when the field is parallel to it. A topologically protected Dirac nodal line is present and robust with respect to both external and anisotropy fields. |
| title | Spin Wave Dispersion of the van der Waals Antiferromagnet NiPS$_3$ |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2504.20540 |