Collective spin excitations of helices and magnetic skyrmions: review and perspectives of magnonics in non-centrosymmetric magnets

Abstract

Magnetic materials hosting correlated electrons play an important role for information technology and signal processing. The currently used ferro-, ferri- and antiferromagnetic materials provide microscopic moments (spins) that are mainly collinear. Recently more complex spin structures such as spin helices and cycloids have regained a lot of interest. The interest has been initiated by the discovery of the skyrmion lattice phase in non-centrosymmetric helical magnets. In this review we address how spin helices and skyrmion lattices enrich the microwave characteristics of magnetic materials. When discussing perspectives for microwave electronics and magnonics we focus particularly on insulating materials as they avoid eddy current losses, offer low spin-wave damping, and might allow for electric field control of collective spin excitations. Thereby, they further fuel the vision of magnonics operated at low energy consumption.

38 pages, 16 figures

References in corpus (43)

• Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmion at room temperature
• Room temperature chiral magnetic skyrmion in ultrathin magnetic nanostructures
• Emergent Phenomena Induced by Spin-Orbit Coupling at Surfaces and Interfaces
• Magnetic skyrmion logic gates: conversion, duplication and merging of skyrmions
• A new class of chiral materials hosting magnetic skyrmions beyond room temperature
• Long wavelength helimagnetic order and skyrmion lattice phase in Cu2OSeO3
• Ultra-low magnetic damping of a metallic ferromagnet
• Topological Magnon Insulator in Insulating Ferromagnet
• The 2014 Magnetism Roadmap
• Thermally Driven Ratchet Motion of Skyrmion Microcrystal and Topological Magnon Hall Effect
• Asymmetric Spin-wave Dispersion on Fe(110): Direct Evidence of Dzyaloshinskii--Moriya Interaction
• Electric-field control of spin waves at room temperature in multiferroic BiFeO3
• Magnon-skyrmion scattering in chiral magnets
• Electric field-induced Skyrmion distortion and giant lattice rotation in the magnetoelectric insulator Cu2OSeO3
• Formation and rotation of skyrmion crystal in the chiral-lattice insulator Cu2OSeO3
• Breathing modes of confined skyrmions in ultrathin magnetic dots
• Chiral surface twists and skyrmion stability in nanolayers of cubic helimagnets
• Surface twist instabilities and skyrmion states in chiral ferromagnets
• The quantum origins of skyrmions and half-skyrmions in Cu2OSeO3
• Mode- and size-dependent Landau-Lifshitz damping in magnetic nanostructures: Evidence for non-local damping
• Asymmetric spin-wave dispersion due to Dzyaloshinskii-Moriya interaction in an ultrathin Pt/CoFeB film
• Spin Orbit Coupling and Spin Waves in Ultrathin Ferromagnets: The Spin Wave Rashba Effect
• Multidomain Skyrmion Lattice State in Cu${}_2$OSeO${}_3$
• Magnetoelectric Resonances and Predicted Microwave Diode Effect of Skyrmion Crystal in Multiferroic Chiral-Lattice Magnet
• Ferrimagnetism of the magnetoelectric compound Cu${}_2$OSeO${}_3$ probed by ${}^{77}$Se NMR
• Edge instabilities and skyrmion creation in magnetic layers
• Spin-Wave Spectrum in Magnetic Nanodot with Continuous Transition between Vortex, Bloch-type Skyrmion and Néel-type Skyrmion States
• Symmetry breaking, slow relaxation dynamics, and topological defects at the field-induced helix reorientation in MnSi
• Gilbert damping of magnetostatic modes in a yttrium iron garnet sphere
• Dynamics of skyrmionic states in confined helimagnetic nanostructures
• Skyrmionic spin Seebeck effect via dissipative thermomagnonic torques
• Motion of skyrmions in nanowires driven by magnonic momentum-transfer forces
• Dynamical defects in rotating magnetic skyrmion lattices
• Magnetic Excitations in the Multiferroic Néel-type Skyrmion Host GaV${}_4$S${}_8$
• Magnon dispersion shift in the induced-ferromagnetic phase of the noncentrosymmetric MnSi
• Establishing the fundamental magnetic interactions in the chiral skyrmionic Mott insulator Cu2OSeO3 by terahertz electron spin resonance
• Dissipation processes in the insulating skyrmion compound Cu2OSeO3
• Chiral magnetic excitations in FeGe films
• Observation of Coherent Helimagnons and Gilbert damping in an Itinerant Magnet
• Spin-wave dynamics in FeGe helimagnet: studied by small-angle neutron scattering
• Eigenmodes of Neel skyrmions in ultrathin magnetic films
• Spin excitations in the skymion host Cu2OSeO3
• Generation of Spin Currents in the Skyrmion Phase of a Helimagnetic Insulator $\mathrm{C}{\mathrm{u}}_2\mathrm{OSe}{\mathrm{O}}_3$

Cited by in corpus (125)

• Beyond skyrmions: Review and perspectives of alternative magnetic quasiparticles
• Skyrmion-electronics: Writing, deleting, reading and processing magnetic skyrmions toward spintronic applications
• The 2020 Skyrmionics Roadmap
• Statics and Dynamics of Skyrmions Interacting with Pinning: A Review
• Magnetic texture based magnonics
• Topological Magnons and Edge States in Antiferromagnetic Skyrmion Crystals
• Topological insulators and semimetals in classical magnetic systems
• Spin eigen-excitations of the magnetic skyrmion and problem of the effective mass
• Interaction-stabilized topological magnon insulator in ferromagnets
• Zoology of multiple-Q spin textures in a centrosymmetric tetragonal magnet with itinerant electrons
• Thermal stability of metastable magnetic skyrmions: Entropic narrowing and significance of internal eigenmodes
• Tunable Magnonic Thermal Hall Effect in Skyrmion Crystal Phases of Ferrimagnets
• Spin-wave diode and circulator based on unidirectional coupling
• Chiral Magnonic Edge States in Ferromagnetic Skyrmion Crystals Controlled by Magnetic Fields
• Microwave resonances of magnetic skyrmions in thin film multilayers
• Topological magnon band structure of emergent Landau levels in a skyrmion lattice
• Magnonic Quadrupole Topological Insulator in Antiskyrmion Crystals
• Low spin wave damping in the insulating chiral magnet Cu${}_2$OSeO${}_3$
• Magnonics: Spin Waves Connecting Charges, Spins and Photons
• Characterizing breathing dynamics of magnetic (anti-)skyrmions within the Hamiltonian formalism
• Spin-transfer torque-driven motion, deformation, and instabilities of magnetic skyrmions at high currents
• Increased lifetime of metastable skyrmions by doping
• Magnon valley Hall effect in CrI3-based vdW heterostructures
• Spin-resolved inelastic electron scattering by spin waves in noncollinear magnets
• Resonance modes and microwave driven translational motion of skyrmion crystal under an inclined magnetic field
• Coupled skyrmion breathing modes in synthetic ferri- and antiferromagnets
• Azimuthal Spin Wave Excitations in Magnetic Nanodots over the Soliton Background: Vortex, Bloch and Néel-like skyrmions
• Nonreciprocity of spin waves in noncollinear magnets due to the Dzyaloshinskii-Moriya interaction
• Colloquium: Quantum Properties and Functionalities of Magnetic Skyrmions
• Field dependence of non-reciprocal magnons in chiral MnSi
• Dynamic Excitations of Chiral Magnetic Textures
• Helimagnon resonances in an intrinsic chiral magnonic crystal
• Topological magnetic excitations
• Weak crystallization of fluctuating skyrmion textures in MnSi
• Observation of nonreciprocal magnon Hanle effect
• Magnonic band gap and mode hybridization in continuous Permalloy film induced by vertical coupling with an array of Permalloy ellipses
• Coupled breathing modes in one-dimensional Skyrmion lattices
• Modelling spin waves in noncollinear antiferromagnets: spin-flop states, spin spirals, skyrmions and antiskyrmions
• Magnetic field dependence of the nonlinear magnetic response and tricritical point in the monoaxial chiral helimagnet Cr${}_{1/3}$NbS${}_2$
• Skyrmion Based Magnonic Crystals
• Emergent SU(3) magnons and thermal Hall effect in the antiferromagnetic skyrmion lattice
• Quantum Damping of Skyrmion Crystal Eigenmodes due to Spontaneous Quasiparticle Decay
• Skyrmion crystals in centrosymmetric triangular magnets under hexagonal and trigonal single-ion anisotropy
• Laser-controlled real- and reciprocal-space topology in multiferroic insulators
• Dynamical Switching of Magnetic Topology in Microwave-Driven Itinerant Magnet
• Topological spin dynamics in cubic FeGe near room temperature
• Essential model parameters for nonreciprocal magnons in multisublattice systems
• Solitary wave excitations of skyrmion strings in chiral magnets
• Topical Review on Skyrmions and Hall Transport
• Effective damping enhancement in noncollinear spin structures
• Signatures of a liquid-crystal transition in spin-wave excitations of skyrmions
• Magnetoelectric Cavity Magnonics in Skyrmion Crystals
• Breathing Mode of a Skyrmion on a Lattice
• Curvature induced magnonic crystal in nanowires
• Spin Wave Radiation by a Topological Charge Dipole
• Megahertz dynamics in skyrmion systems probed with muon-spin relaxation
• Towards an effective theory of skyrmion crystals
• Localized spin waves in isolated $k\pi$ skyrmions
• Frustration model and spin excitations in the helimagnet FeP
• Anisotropic skyrmion and multi-$q$ spin dynamics in centrosymmetric Gd${}_2$PdSi${}_3$
• Nonlinear dynamics of topological ferromagnetic textures for frequency multiplication
• Total helicity of electromagnetic fields and matter
• Field-induced reorientation of helimagnetic order in Cu${}_2$OSeO${}_3$ probed by magnetic force microscopy
• Magnetism and Néel skyrmion dynamics in GaV${}_4$S${}_{8-y}$Se${}_y$
• Quantum Depinning of a Magnetic Skyrmion
• Twists in Ferromagnetic Monolayers With Trigonal Prismatic Symmetry
• Triple helix vs. skyrmion lattice in two-dimensional non-centrosymmetric magnets
• DC spinmotive force from microwave-active resonant dynamics of skyrmion crystal under a tilted magnetic field
• Skyrmion-Excited Spin Wave Fractal Network
• Polarized inelastic neutron scattering of non-reciprocal spin waves in MnSi
• Geometrically constrained Skyrmions
• Non-reciprocal magnons in non-centrosymmetric MnSi
• Selective Activation of an Isolated Magnetic Skyrmion in a Ferromagnet with Microwave Electric Fields
• Thermal fluctuations in the conical state of monoaxial helimagnets
• Tunable gigahertz dynamics of low-temperature skyrmion lattice in a chiral magnet
• Evidence of a first-order smectic -- hexatic transition and its proximity to tricritical point in smectic films
• Key points in the determination of the interfacial Dzyaloshinskii-Moriya interaction from asymmetric bubble domain expansion
• Tunable Cooperativity in Coupled Spin--Cavity Systems
• Chiral standing spin waves in skyrmion lattice
• Confined dipole and exchange spin waves in a bulk chiral magnet with Dzyaloshinskii-Moriya interaction
• Effective field theory of magnon: Dynamics in chiral magnets and Schwinger mechanism
• Unconventional magnetism mediated by spin-phonon-photon coupling
• Robust cycloid crossover driven by anisotropy in the skyrmion host GaV${}_4$S${}_8$
• Inertial spin waves in spin spirals
• Optically excited spin dynamics of thermally metastable skyrmions in Fe${}_{0.75}$Co${}_{0.25}$Si
• Spin waves in skyrmionic structures with various topological charges
• Magnonic Band Structure Established by Chiral Spin-Density Waves in Thin Film Ferromagnets
• Thermoelectric effect of skyrmion crystal confined in a magnetic disk
• Dynamical susceptibility of Skyrmion crystal
• From the spin eigenmodes of isolated Néel skyrmions to the magnonic bands of a skyrmionic crystal: a micromagnetic study as a function of the strength of both the interfacial Dzyaloshinskii-Moriya and the exchange constants
• Eigenmodes of magnetic skyrmion lattices
• Instability of magnetic skyrmion strings induced by longitudinal spin currents
• Magnon topological transition in skyrmion crystal
• Time-resolved measurement of spin excitations in Cu${}_2$OSeO${}_3$
• Momentum-space theory for topological magnons in 2D ferromagnetic skyrmion lattices
• Resonant dynamics of skyrmion lattices in thin film multilayers: Localised modes and spin wave emission
• Effective field theory of fluctuating wall in open systems: from a kink in Josephson junction to general domain wall
• Short-wave magnons with multipole spin precession detected in the topological bands of a skyrmion lattice
• Anisotropy-dependent decay of room temperature metastable skyrmions and a nascent double-$q$ spin texture in Co${}_8$Zn${}_9$Mn${}_3$
• Magnetostatic bounds on stability of hopfions in bulk helimagnets
• Thickness-Driven Transitions Between Novel Magnetic States in Ferromagnetic Films
• Hybrid magnetization dynamics in ${\text{Cu}}_{\text{2}}{\text{OSeO}}_{\text{3}}$/$\mathrm{NiFe}$ heterostructures
• Electric-field control of collective spin excitations in Neel-type skyrmions
• Emergent elastic waves in skyrmion crystals with finite frequencies at long wavelength limit
• Long-wavelength emergent phonons in skyrmion crystals distorted by exchange anisotropy and tilted magnetic fields
• Goldstone mode of Skyrmion Crystal
• Hybrid micromagnetic and atomistic modeling of magnetization dynamics induced by engineered defects
• Topological dipoles of quantum skyrmions
• Field-direction-dependent skyrmion crystals in noncentrosymmetric cubic magnets: A comparison between point groups $(O,T)$ and $T_{\mathrm{d}}$
• Zero-field 29Si nuclear magnetic resonance signature of helimagnons in MnSi
• Lagrangian formulation for emergent elastic waves in magnetic emergent crystals
• Topological transition in spectrum of skyrmion crystal with uniaxial anisotropy
• Photo-induced Non-collinear Interlayer RKKY Coupling in Bulk Rashba Semiconductors
• Origin of the suppression of magnetic order in MnSi under hydrostatic pressure
• Hidden quantum correlations in the ground states of quasiclassical spin systems
• Magnon band structure of skyrmion crystals and stereographic projection approach
• Magnetic and geometrical control of spin textures in the itinerant kagome magnet Fe${}_3$Sn${}_2$
• Long-distance coupling of spin qubits via topological magnons
• Archimedean Screw in Driven Chiral Magnets
• Impact of the honeycomb spin-lattice on topological magnons and edge states in ferromagnetic 2D skyrmion crystals
• ${\mathbb{Z}}_2$ Vortex Crystals in Tetrahedral Antiferromagnets: Fractional Charges and Topological Magnons
• Persistence of the Berezinskii-Kosterlitz-Thouless transition with long-range couplings
• Magnon edge states of skyrmion crystal in non-uniform magnetic field
• Spatial decay of isolated magnetic hopfions in chiral helimagnets
• Theory of drift-enabled control in nonlocal magnon transport