CP2 skyrmions and skyrmion crystals in realistic quantum magnets

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

doi:10.1038/s41467-023-39232-8

CP² skyrmions and skyrmion crystals in realistic quantum magnets

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

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

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 ≅ S ². 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.

Original language	English
Article number	3626
Journal	Nature Communications
Volume	14
Issue number	1
DOIs	https://doi.org/10.1038/s41467-023-39232-8
State	Published - Dec 2023
Externally published	Yes

Funding

We acknowledge useful discussions with Xiaojian Bai, Antia Botana, Ying Wai Li, Shizeng Lin, Cole Miles, Martin Mourigal, Sakib Matin, Matthew Wilson, and Shang-Shun Zhang. D. D., K. B. and C.D.B. acknowledge support from the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Award No. DE-SC0022311. The work by H.Z. was supported by the Graduate Advancement, Training and Education (GATE) fellowship. Z.W. was supported by the U.S. Department of Energy through the University of Minnesota Center for Quantum Materials under Award No. DE-SC-0016371.

Funders	Funder number
University of Minnesota Center for Quantum Materials	DE-SC-0016371
U.S. Department of Energy
Office of Science
Basic Energy Sciences	DE-SC0022311

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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 ≅ S 2. 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.",

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CP² skyrmions and skyrmion crystals in realistic quantum magnets

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