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arXiv · 2203.15248

CP$^2$ Skyrmions and Skyrmion Crystals in Realistic Quantum Magnets

Hao Zhang·Zhentao Wang·David Dahlbom·Kipton Barros·Cristian D. Batista
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Abstract

Magnetic skyrmions are nanoscale topological textures that have been recently observed in different families of quantum magnets. These textures are known as CP$^1$ skyrmions because the target manifold of the magnetization field is the 2D sphere $S^2 \cong$ CP$^{1}$. Here we report the emergence of magnetic CP$^2$ skyrmions in realistic spin-$1$ models. Unlike CP$^1$ skyrmions, CP$^2$ skyrmions can also arise as metastable textures of quantum paramagnets, opening a new road to discover emergent topological solitons in non-magnetic materials. The quantum phase diagram of the spin-$1$ models also includes magnetic field-induced CP$^2$ skyrmion crystals that can be detected with regular momentum- (diffraction) and real-space (Lorentz transmission electron microscopy) experimental techniques.

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Hao Zhang, Zhentao Wang, David Dahlbom, Kipton Barros, Cristian D. Batista. 2022-03-29. CP$^2$ Skyrmions and Skyrmion Crystals in Realistic Quantum Magnets. https://doi.org/10.1038/s41467-023-39232-8

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