CP2 skyrmions and skyrmion crystals in realistic quantum magnets

Hao Zhang (), Zhentao Wang, David Dahlbom, Kipton Barros and Cristian D. Batista ()
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Hao Zhang: The University of Tennessee
Zhentao Wang: The University of Tennessee
David Dahlbom: The University of Tennessee
Kipton Barros: Los Alamos National Laboratory
Cristian D. Batista: The University of Tennessee

Nature Communications, 2023, vol. 14, issue 1, 1-7

Abstract: Abstract Magnetic skyrmions are nanoscale topological textures that have been recently observed in different families of quantum magnets. These objects are called CP1 skyrmions because they are built from dipoles—the target manifold is the 1D complex projective space, CP1 ≅ S2. Here we report the emergence of magnetic CP2 skyrmions in a realistic spin-1 model, which includes both dipole and quadrupole moments. Unlike CP1 skyrmions, CP2 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 model also includes magnetic field-induced CP2 skyrmion crystals that can be detected with regular momentum- (diffraction) and real-space (Lorentz transmission electron microscopy) experimental techniques.

Date: 2023
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DOI: 10.1038/s41467-023-39232-8

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