Single-layer Skyrmions in a van der Waals Antiferromagnet
A Pozzi, M Mostovoy - arXiv preprint arXiv:2111.11420, 2021 - arxiv.org
A Pozzi, M Mostovoy
arXiv preprint arXiv:2111.11420, 2021•arxiv.orgTransition metal halides are quasi-two-dimensional van der Waals magnets that can
potentially host antiferromagnetic (AFM) skyrmions induced by competing exchange
interactions. We study theoretically magnetic states of Fe-doped NiBr $ _2 $ using spin
interactions obtained by fitting experimental data. We find that AFM interlayer interactions
suppress skyrmion lattices but allow for skyrmions with topological charges $1, 2$ and $3 $
confined to a single magnetic layer. These single-layer skyrmions exist in three different …
potentially host antiferromagnetic (AFM) skyrmions induced by competing exchange
interactions. We study theoretically magnetic states of Fe-doped NiBr $ _2 $ using spin
interactions obtained by fitting experimental data. We find that AFM interlayer interactions
suppress skyrmion lattices but allow for skyrmions with topological charges $1, 2$ and $3 $
confined to a single magnetic layer. These single-layer skyrmions exist in three different …
Transition metal halides are quasi-two-dimensional van der Waals magnets that can potentially host antiferromagnetic (AFM) skyrmions induced by competing exchange interactions. We study theoretically magnetic states of Fe-doped NiBr using spin interactions obtained by fitting experimental data. We find that AFM interlayer interactions suppress skyrmion lattices but allow for skyrmions with topological charges and confined to a single magnetic layer. These single-layer skyrmions exist in three different magnetic phases and their dynamics changes drastically at the transition from a uniform to a non-collinear modulated state.
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