Low-Energy Excitations of Skyrmion Crystals in a Centrosymmetric Kondo-Lattice Magnet: Decoupled Spin-Charge Excitations and Nonreciprocity

Abstract

We theoretically study spin and charge excitations of skyrmion crystals stabilized by conduction-electron-mediated magnetic interactions via spin-charge coupling in a centrosymmetric Kondo-lattice model by large-scale spin-dynamics simulations combined with the kernel polynomial method. We reveal clear segregation of spin and charge excitation channels and nonreciprocal nature of the spin excitations governed by the Fermi-surface geometry, which are unique to the skyrmion crystals in centrosymmetric itinerant hosts and can be a source of novel physical phenomena.

arXiv comment7 pages, 4 figures

References in corpus (68)

• Skyrmion Lattice in a Chiral Magnet
• Spontaneous Skyrmion Ground States in Magnetic Metals
• Topological Hall effect in the A-phase of MnSi
• The Kernel Polynomial Method
• Emergent electrodynamics of skyrmions in a chiral magnet
• Skyrmion lattice with a giant topological Hall effect in a frustrated triangular-lattice magnet
• Spin Anisotropy and Quantum Hall Effect in the Kagome Lattice - Chiral Spin State based on a Ferromagnet-
• Multiple-q states and skyrmion lattice of the triangular-lattice Heisenberg antiferromagnet under magnetic fields
• Multiply periodic states and isolated skyrmions in an anisotropic frustrated magnet
• Berry Phase Theory of Anomalous Hall Effect: Application to Colossal Magnetoresistance Manganites
• Topological Hall effect and Berry phase in magnetic nanostructures
• Dynamics of Skyrmion Crystals in Metallic Thin Films
• Unusual Hall Effect Anomaly in MnSi Under Pressure
• Spin-Wave Modes and Their Intense Excitation Effects in Skyrmion Crystals
• Skyrmion phase and competing magnetic orders on a breathing kagome lattice
• Skyrmions and Anomalous Hall Effect in a Dzyloshinskii-Moriya Spiral Magnet
• Nanometric square skyrmion lattice in a centrosymmetric tetragonal magnet
• Theory of pump-probe photoemission in graphene: Ultrafast tuning of Floquet bands and local pseudospin textures
• Ginzburg-Landau theory for skyrmions in inversion-symmetric magnets with competing interactions
• Theoretical description of time-resolved photoemission spectroscopy: application to pump-probe experiments
• Effective bilinear-biquadratic model for noncoplanar ordering in itinerant magnets
• Skyrme Crystal In A Two-Dimensional Electron Gas
• Skyrmion dynamics in a frustrated ferromagnetic film and current-induced helicity locking-unlocking transition
• Skyrmion Qubits: A New Class of Quantum Logic Elements Based on Nanoscale Magnetization
• Fractional antiferromagnetic skyrmion lattice induced by anisotropic couplings
• Bubble and Skyrmion Crystals in Frustrated Magnets with Easy-Axis Anisotropy
• Antiferromagnetic skyrmion crystals: generation, topological Hall and topological spin Hall effect
• Goldstone and Pseudo-Goldstone Bosons in Nuclear, Particle and Condensed-Matter Physics
• Anomalous Hall Effect and Skyrmion Number in Real- and Momentum-space
• Meron, skyrmion, and vortex crystals in centrosymmetric tetragonal magnets
• Topological Nernst effect of the two-dimensional skyrmion lattice
• Giant generic topological Hall resistivity of MnSi under pressure
• Skyrmion Crystal from RKKY Interaction Mediated by 2D Electron Gas
• Propagating spin excitations along skyrmion strings
• Bound states of skyrmions and merons near the Lifshitz point
• Imaging the coupling between itinerant electrons and localised moments in the centrosymmetric skyrmion magnet GdRu2Si2
• Square skyrmion crystal in centrosymmetric itinerant magnets
• Topological spin crystals by itinerant frustration
• Vortex Crystals with Chiral Stripes in Itinerant Magnets
• Edge states and skyrmion dynamics in nanostripes of frustrated magnets
• Nanometric skyrmion lattice from anisotropic exchange interactions in a centrosymmetric host
• Theory of electromagnon in the multiferroic Mn perovskites: Vital role of higher harmonic components of the spiral spin order
• Noncoplanar multiple-$Q$ spin textures by itinerant frustration: Effects of single-ion anisotropy and bond-dependent anisotropy
• Zoology of multiple-Q spin textures in a centrosymmetric tetragonal magnet with itinerant electrons
• Formation mechanism of helical Q structure in Gd-based skyrmion materials
• Efficient Langevin Simulation of Coupled Classical Fields and Fermions
• Dynamical magnetoelectric phenomena of multiferroic skyrmions
• Vortices, skyrmions, and chirality waves in frustrated Mott insulators with a quenched periodic array of impurities
• Novel magnetic orderings in the kagome Kondo-lattice model
• Quantum skyrmions in frustrated ferromagnets
• A Monte Carlo Method for Fermion Systems Coupled with Classical Degrees of Freedom
• Degeneracy Lifting of Néel, Bloch, and Anti-Skyrmion Crystals in Centrosymmetric Tetragonal Systems
• High-field depinned phase and planar Hall effect in skyrmion-host Gd${}_2$PdSi${}_3$
• Magnetic vortex crystals in frustrated Mott insulator
• Face centered cubic and hexagonal close packed skyrmion crystals in centro-symmetric magnets
• Resistivity Minimum in Highly Frustrated Itinerant Magnets
• Controlling the helicity of magnetic skyrmions by electrical field in frustrated magnets
• Large Anomalous Nernst Effect in a Skyrmion Crystal
• Semiclassical dynamics of spin density waves
• Gradient-based stochastic estimation of the density matrix
• Dynamical Switching of Magnetic Topology in Microwave-Driven Itinerant Magnet
• Solitary wave excitations of skyrmion strings in chiral magnets
• Shape of magnetic domain walls formed by coupling to mobile charges
• Large anomalous Nernst coefficient in an oxide Skyrmion crystal Chern insulator
• Emergent skyrmion-based chiral order in zero-field Heisenberg antiferromagnets on the breathing kagome lattice
• Effect of Quantum Spin Fluctuation on Scalar Chiral Ordering in the Kondo Lattice Model on a Triangular Lattice
• Skyrmion Tubes in achiral nematic liquid crystals
• Non-uniform localised distortions in generalised elasticity for liquid crystals

Cited by in corpus (13)

• Widely-sweeping magnetic field-temperature phase diagrams for skyrmion-hosting centrosymmetric tetragonal magnets
• Ferroaxial moment induced by vortex spin texture
• Skyrmion and vortex crystals in the Hubbard model
• Stability of Skyrmion Crystal Phase in Centrosymmetric Distorted Triangular-Lattice Antiferromagnets
• Equivariant Neural Networks for Spin Dynamics Simulations of Itinerant Magnets
• Antiferro skyrmion crystal phases in a synthetic bilayer antiferromagnet under an in-plane magnetic field
• Theory of collective excitations in the quadruple-$Q$ magnetic hedgehog lattices
• Field-induced transformation between triangular and square skyrmion crystals in a tetragonal polar magnet
• Three-sublattice antiferro-type and ferri-type skyrmion crystals in centrosymmetric magnets
• Dynamical and Static Structure Factors in Hedgehog-Antihedgehog Order in Icosahedral 1/1 Approximant Crystal
• Field-tunable quadruple-$Q$ states driven by momentum-space frustration
• Stacking-dependent nonreciprocal transport in magnetic skyrmions
• Emergence of topological defects and spin liquid in a two-orbital spin-fermion model on the honeycomb lattice