Emergent topological spin structures in a centrosymmetric cubic perovskite

Abstract

The skyrmion crystal (SkX) characterized by a multiple-q helical spin modulation has been reported as a unique topological state that competes with the single-q helimagnetic order in non-centrosymmetric materials. Here we report the discovery of a rich variety of multiple-q helimagnetic spin structures in the centrosymmetric cubic perovskite SrFeO3. On the basis of neutron diffraction measurements, we have identified two types of robust multiple-q topological spin structures that appear in the absence of external magnetic fields: an anisotropic double-q spin spiral and an isotropic quadruple-q spiral hosting a three-dimensional lattice of hedgehog singularities. The present system not only diversifies the family of SkX host materials, but furthermore provides an experimental missing link between centrosymmetric lattices and topological helimagnetic order. It also offers perspectives for integration of SkXs into oxide electronic devices.

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Cited by in corpus (63)

• The 2020 Skyrmionics Roadmap
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• Phase Shift in Skyrmion Crystals
• Multiple skyrmion crystal phases by itinerant frustration in centrosymmetric tetragonal magnets
• Chiral properties of the zero-field spiral state and field-induced magnetic phases of the itinerant kagome metal YMn${}_6$Sn${}_6$
• Effective spin model in momentum space: Toward a systematic understanding of multiple-$Q$ instability by momentum-resolved anisotropic exchange interactions
• Skyrmion Qubits: Challenges For Future Quantum Computing Applications
• Skyrmion crystal and spiral phases in centrosymmetric bilayer magnets with staggered Dzyaloshinskii-Moriya interaction
• Incommensurate magnetic orders and topological Hall effect in the square-net centrosymmetric EuGa${}_2$Al${}_2$ system
• Hedgehog-lattice spin texture in classical Heisenberg antiferromagnets on the breathing pyrochlore lattice
• Locking of skyrmion cores on a centrosymmetric discrete lattice: onsite versus offsite
• Stabilization mechanisms of magnetic skyrmion crystal and multiple-$Q$ states based on momentum-resolved spin interactions
• Spin excitation spectra in helimagnetic states: proper-screw, cycloid, vortex crystal, and hedgehog lattice
• Mechanism of antisymmetric spin polarization in centrosymmetric multiple-$Q$ magnets based on bilinear and biquadratic spin cross products
• Spin moiré engineering of topological magnetism and emergent electromagnetic fields
• Multifarious skyrmion phases on a trilayer triangular lattice
• Competing spin modulations in a magnetically frustrated semimetal EuCuSb
• Phase transitions between helices, vortices, and hedgehogs driven by spatial anisotropy in chiral magnets
• Widely-sweeping magnetic field-temperature phase diagrams for skyrmion-hosting centrosymmetric tetragonal magnets
• Magnetism and topology in Tb-based icosahedral quasicrystal
• Complete phase diagram of Sr${}_{1-x}$La${}_x$FeO${}_3$ with versatile magnetic and charge ordering
• Dynamical Switching of Magnetic Topology in Microwave-Driven Itinerant Magnet
• Skyrmion crystals in centrosymmetric triangular magnets under hexagonal and trigonal single-ion anisotropy
• Temperature-driven transition from skyrmion to bubble crystals in centrosymmetric itinerant magnets
• Charge density waves in multiple-$Q$ spin states
• Square skyrmion crystal in centrosymmetric systems with locally inversion-asymmetric layers
• Pseudogap and Fermi arc induced by Fermi surface nesting in a centrosymmetric skyrmion magnet
• Phase degree of freedom and topology in multiple-$Q$ spin textures
• Magnetic Hedgehog Lattice in a Centrosymmetric Cubic Metal
• Competing charge and magnetic order in the candidate centrosymmetric skyrmion host EuGa${}_2$Al${}_2$
• Emergent skyrmion-based chiral order in zero-field Heisenberg antiferromagnets on the breathing kagome lattice
• Real-Space Observation of Ligand Hole State in Cubic Perovskite SrFeO${}_3$
• Negative charge transfer energy in correlated compounds
• Hedgehog lattice and field-induced chirality in breathing-pyrochlore Heisenberg antiferromagnets
• Stability of Skyrmion Crystal Phase in Centrosymmetric Distorted Triangular-Lattice Antiferromagnets
• Anisotropic spin model and multiple-$Q$ states in cubic systems
• Skyrmion crystal under $D_{3h}$ point group: Role of out-of-plane Dzyaloshinskii-Moriya interaction
• Incommensurate and multiple-$\mathbf{q}$ magnetic misfit order in the frustrated quantum-spin-ladder material antlerite, Cu${}_3$SO${}_4$(OH)${}_4$
• Hidden Topological Transitions in Emergent Magnetic Monopole Lattices
• Skyrmion crystal with integer and fractional skyrmion numbers in a nonsymmorphic lattice structure with the screw axis
• On the multi-$\mathbf{q}$ characteristics of magnetic ground states of honeycomb cobalt oxides
• Checkerboard bubble lattice formed by octuple-period quadruple-$Q$ spin density waves
• Magnetic Phase Diagram of Rouaite, Cu${}_2$(OH)${}_3$NO${}_3$
• Reentrant multiple-$\mathbf{q}$ magnetic order and a "spin-cholesteric" phase in Sr${}_3$Fe${}_2$O${}_7$
• Current-induced motion of nanoscale magnetic torons over the wide range of the Hall angle
• Rich Magnetic Phase Diagram of Putative Helimagnet Sr${}_3$Fe${}_2$O${}_7$
• Theory of collective excitations in the quadruple-$Q$ magnetic hedgehog lattices
• Orbital moiré and quadrupolar triple-q physics in a triangular lattice
• Anisotropy of the magnetic-field-induced phase pocket in the non-Kramers doublet system PrIr${}_2$Zn${}_{20}$
• Electrically-excited Motion of Topological Defects in Multiferroic Materials
• Electronic Structure of the Bond Disproportionated Bismuthate Ag${}_2$BiO${}_3$
• Spin-charge coupling and decoupling in perovskite-type iron oxides (Sr${}_{1-x}$Ba${}_x$)${}_{2/3}$La${}_{1/3}$FeO${}_3$
• Possible helimagnetic order in Co4+-containing perovskites Sr1-xCaxCoO3
• Theory of magnetic vortex crystals induced by electric dipole interactions
• Exploration of metastable A-site-ordered perovskites (Ca,Ba)FeO3-δ by computationally-guided multi-step synthesis
• Four-Spin Interactions as a Route to Multiple-Q Topological Magnetic Order
• Three-sublattice antiferro-type and ferri-type skyrmion crystals in centrosymmetric magnets
• Photoinduced Transient States of Antiferromagnetic Orderings in La${}_{1/3}$Sr${}_{2/3}$FeO${}_3$ and SrFeO${}_3$ Thin Films Observed through Time-resolved Resonant Soft X-ray Scattering
• Anomalous quasielastic scattering contribution in the centrosymmetric multi-$\mathbf{q}$ helimagnet SrFeO${}_3$
• Double-$Q$ and quadruple-$Q$ instabilities at low-symmetric ordering wave vectors under tetragonal symmetry
• Spin stiffness, spectral weight, and Landau damping of magnons in metallic spiral magnets
• Field-tunable quadruple-$Q$ states driven by momentum-space frustration