Theory of collective excitations in the quadruple- magnetic hedgehog lattices
arXiv:2403.01765 · doi:10.1103/PhysRevLett.132.226705
Abstract
Hedgehog and antihedgehog spin textures in magnets behave as emergent monopoles and antimonopoles, which give rise to astonishing transport and electromagnetic phenomena. Using the Kondo-lattice model in three dimensions, we theoretically study collective spin-wave excitation modes of magnetic hedgehog lattices which have recently been discovered in itinerant magnets such as MnSi1-xGex and SrFeO3. It is revealed that the spin-wave modes, which appear in the sub-terahertz regime, have dominant amplitudes localized at Dirac strings connecting hedgehog-antihedgehog pairs and are characterized by their translational oscillations. It is found that their spectral features sensitively depend on the number and configuration of the Dirac strings and, thus, can be exploited for identifying the topological phase transitions associated with the monopole-antimonopole pair annihilations.
arXiv comment6+9 pages, 4+8 figures
References in corpus (40)
- Chern semi-metal and Quantized Anomalous Hall Effect in HgCr2Se4
- The Kernel Polynomial Method
- Quantum Excitations in Quantum Spin Ice
- Spin-Wave Modes and Their Intense Excitation Effects in Skyrmion Crystals
- Spin Ice, Fractionalization and Topological Order
- Effective bilinear-biquadratic model for noncoplanar ordering in itinerant magnets
- Theory of the helical spin crystal: a candidate for the partially ordered state of MnSi
- Real-space observation of short-period cubic lattice of skyrmions in MnGe
- Anomalous Nernst Effect in Dirac Semimetal Cd3As2
- Quantum Hall states observed in thin films of Dirac semimetal Cd3As2
- Hidden Multiple-spin Interactions as an Origin of Spin Scalar Chiral Order in Frustrated Kondo Lattice Models
- Topological-chiral magnetic interactions driven by emergent orbital magnetism
- Theory of helical spin crystals: phases, textures and properties
- Emergent topological spin structures in a centrosymmetric cubic perovskite
- Multiple-Q Instability by (d-2)-dimensional Connections of Fermi Surfaces
- Magnetic hedgehog lattices in noncentrosymmetric metals
- Formation mechanism of helical Q structure in Gd-based skyrmion materials
- Efficient Langevin Simulation of Coupled Classical Fields and Fermions
- Zero-temperature phases for chiral magnets in three dimensions
- A Monte Carlo Method for Fermion Systems Coupled with Classical Degrees of Freedom
- A Measure of Monopole Inertia in the Quantum Spin Ice YbTiO
- Resistivity Minimum in Highly Frustrated Itinerant Magnets
- Hedgehog-lattice spin texture in classical Heisenberg antiferromagnets on the breathing pyrochlore lattice
- Semiclassical dynamics of spin density waves
- Spin excitation spectra in helimagnetic states: proper-screw, cycloid, vortex crystal, and hedgehog lattice
- Spin moiré engineering of topological magnetism and emergent electromagnetic fields
- Electric transport in three-dimensional Skyrmion/monopole crystal
- Low-Energy Excitations of Skyrmion Crystals in a Centrosymmetric Kondo-Lattice Magnet: Decoupled Spin-Charge Excitations and Nonreciprocity
- Formation of a Topological Monopole Lattice and its Dynamics in Three-dimensional Chiral Magnets
- Topological magnetic textures and long-range orders in Tb-based quasicrystal and approximant
- Topological transport of deconfined hedgehogs in magnets
- Complex magnetism of B20-MnGe: from spin-spirals, hedgehogs to monopoles
- Spectrum of itinerant fractional excitations in quantum spin ice
- Phase degree of freedom and topology in multiple- spin textures
- Magnetic structure of the MnGe helimagnet and representation analysis
- Enhanced Electrical Magnetochiral Effect by Spin-hedgehog Lattice Structural Transition
- Ultrasonic elastic responses in monopole lattice
- Topological magnetic structures in MnGe: Neutron diffraction and symmetry analysis
- Hidden Topological Transitions in Emergent Magnetic Monopole Lattices
- Spin-hedgehog-derived electromagnetic effects in itinerant magnets