Meron, skyrmion, and vortex crystals in centrosymmetric tetragonal magnets
arXiv:2011.04033 · doi:10.1103/PhysRevB.103.104408
Abstract
The recent experimental confirmation of a transformation between meron and skyrmion topological spin textures in the chiral magnet CoZnMn [S.-Z. Lin et al., Phys. Rev. B 91, 224407 (2015); X. Z. Yu et al., Nature 564, 95 (2018)] confirms that the skyrmion crystals discovered in 2009 [S. Mühlbauer et al., Science 323, 915 (2009)] are just the tip of the iceberg. Crystals of topological textures, including skyrmions, merons, vortices, and monopoles, can be stabilized by combining simple physical ingredients, such as lattice symmetry, frustration, and spin anisotropy. The current challenge is to find the combinations of these ingredients that produce specific topological spin textures. Here we report a simple mechanism for the stabilization of meron, skyrmion, and vortex crystals in centrosymmetric tetragonal magnets. In particular, the meron/skyrmion crystals can form even in absence of magnetic field. The application of magnetic field leads to a rich variety of topological spin textures that survive in the long wavelength limit of the theory. When conduction electrons are coupled to the spins, these topological spin textures twist the electronic wave functions to induce Chern insulators and Weyl semimetals for specific band filling fractions.
13 pages, 10 figures
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Cited by in corpus (17)
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- Field-Direction Sensitive Skyrmion Crystals in Cubic Chiral Systems: Implication to -Electron Compound EuPtSi
- Skyrmion crystal and spiral phases in centrosymmetric bilayer magnets with staggered Dzyaloshinskii-Moriya interaction
- Helicity locking of square skyrmion crystal in a centrosymmetric lattice system without vertical mirror symmetry
- Mechanism of antisymmetric spin polarization in centrosymmetric multiple- magnets based on bilinear and biquadratic spin cross products
- Magnetic field-temperature phase diagrams for multiple- magnetic orderings: Exact steepest descent approach to long-range interacting spin systems
- Dynamical Switching of Magnetic Topology in Microwave-Driven Itinerant Magnet
- Skyrmion crystals in centrosymmetric triangular magnets under hexagonal and trigonal single-ion anisotropy
- Charge density waves in multiple- spin states
- Nonreciprocal Transport in Noncoplanar Magnetic Systems without Spin-Orbit Coupling, Net Scalar Chirality, or Magnetization
- Ferroaxial moment induced by vortex spin texture
- Emergent skyrmion-based chiral order in zero-field Heisenberg antiferromagnets on the breathing kagome lattice
- Skyrmion lattice hosted in synthetic antiferromagnets and helix modes
- Stability of Skyrmion Crystal Phase in Centrosymmetric Distorted Triangular-Lattice Antiferromagnets
- Engineering a skyrmion crystal in ferromagnetic/antiferromagnetic bilayers free from the DM interaction
- Meron-antimeron crystals in noncentrosymmetric itinerant magnets on a triangular lattice