Spin Inertia as a Source of Topological Magnons: Chiral Edge States from Coupled Precession and Nutation
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866914432342294528 |
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| author | Ghosh, Subhadip Cherkasskii, Mikhail Mondal, Ritwik Mook, Alexander Rózsa, Levente |
| author_facet | Ghosh, Subhadip Cherkasskii, Mikhail Mondal, Ritwik Mook, Alexander Rózsa, Levente |
| contents | Spin inertia has been demonstrated to give rise to high-frequency nutational excitations beyond the conventional low-frequency precessional modes. Here, we demonstrate that the hybridization between precessional and nutational magnons may give rise to topological phenomena in the spin-wave spectrum. This hybridization requires the presence of interactions breaking angular-momentum conservation, such as the pseudodipolar interaction. We show on the example of a honeycomb ferromagnet how topological gaps open between the precessional and nutational bands that host chiral edge states in slab geometries. Our work establishes a theoretical foundation for exploring inertial spin dynamics as a new route to engineer topological phases in magnetic materials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_06219 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Spin Inertia as a Source of Topological Magnons: Chiral Edge States from Coupled Precession and Nutation Ghosh, Subhadip Cherkasskii, Mikhail Mondal, Ritwik Mook, Alexander Rózsa, Levente Materials Science Mesoscale and Nanoscale Physics Spin inertia has been demonstrated to give rise to high-frequency nutational excitations beyond the conventional low-frequency precessional modes. Here, we demonstrate that the hybridization between precessional and nutational magnons may give rise to topological phenomena in the spin-wave spectrum. This hybridization requires the presence of interactions breaking angular-momentum conservation, such as the pseudodipolar interaction. We show on the example of a honeycomb ferromagnet how topological gaps open between the precessional and nutational bands that host chiral edge states in slab geometries. Our work establishes a theoretical foundation for exploring inertial spin dynamics as a new route to engineer topological phases in magnetic materials. |
| title | Spin Inertia as a Source of Topological Magnons: Chiral Edge States from Coupled Precession and Nutation |
| topic | Materials Science Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2603.06219 |