dorsal/arxiv
View SchemaTwo-Dimensional Twisted Ferromagnetic Domain Wall as a Spin-Wave Diffraction Grating
| Authors | Ehsan Faridi, Se Kwon Kim, Giovanni Vignale |
|---|---|
| Categories | |
| ArXiv ID | 2601.08993vv1 |
| URL | https://arxiv.org/abs/2601.08993 |
| License | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
Abstract
We present a theoretical study of spin-wave scattering by a twisted domain wall (DW) in a two-dimensional ferromagnet with easy-axis anisotropy. While the twisted DW generates an effective gauge field for spin waves, leading to a deflection of their trajectories, our main focus is on a distinct effect that arises when a hard-axis anisotropy is present in addition to the easy-axis anisotropy. In this case, the translational symmetry of the spin-wave Hamiltonian along the DW is broken, resulting in a periodic modulation of the Hamiltonian. This periodicity leads to the formation of multiple diffracted spin wave modes on both sides of the DW, engendering a DW-induced magnonic diffraction pattern. The interplay between the emergent gauge field and the anisotropy-induced periodicity reveals rich spin-wave dynamics and suggests potential applications for manipulating magnon flow in two-dimensional magnetic textures.
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"abstract": "We present a theoretical study of spin-wave scattering by a twisted domain wall (DW) in a two-dimensional ferromagnet with easy-axis anisotropy. While the twisted DW generates an effective gauge field for spin waves, leading to a deflection of their trajectories, our main focus is on a distinct effect that arises when a hard-axis anisotropy is present in addition to the easy-axis anisotropy. In this case, the translational symmetry of the spin-wave Hamiltonian along the DW is broken, resulting in a periodic modulation of the Hamiltonian. This periodicity leads to the formation of multiple diffracted spin wave modes on both sides of the DW, engendering a DW-induced magnonic diffraction pattern. The interplay between the emergent gauge field and the anisotropy-induced periodicity reveals rich spin-wave dynamics and suggests potential applications for manipulating magnon flow in two-dimensional magnetic textures.",
"arxiv_id": "2601.08993",
"authors": [
"Ehsan Faridi",
"Se Kwon Kim",
"Giovanni Vignale"
],
"categories": [
"cond-mat.mes-hall",
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"license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
"title": "Two-Dimensional Twisted Ferromagnetic Domain Wall as a Spin-Wave Diffraction Grating",
"url": "https://arxiv.org/abs/2601.08993",
"version": "v1"
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