Effective damping enhancement in noncollinear spin structures
arXiv:1805.01815 · doi:10.1103/PhysRevB.98.100404
Abstract
Damping mechanisms in magnetic systems determine the lifetime, diffusion and transport properties of magnons, domain walls, magnetic vortices, and skyrmions. Based on the phenomenological Landau-Lifshitz-Gilbert equation, here the effective damping parameter in noncollinear magnetic systems is determined describing the linewidth in resonance experiments or the decay parameter in time-resolved measurements. It is shown how the effective damping can be calculated from the elliptic polarization of magnons, arising due to the noncollinear spin arrangement. It is concluded that the effective damping is larger than the Gilbert damping, and it may significantly differ between excitation modes. Numerical results for the effective damping are presented for the localized magnons in isolated skyrmions, with parameters based on the Pd/Fe/Ir(111) model-type system.
arXiv commentPaper: 6 pages, 3 figures; Supplemental Material: 5 pages, 2 figures
References in corpus (39)
- Direct Observation of the Skyrmion Hall Effect
- Skyrmions at room temperature : From magnetic thin films to magnetic multilayers
- Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmion at room temperature
- Dynamics of Skyrmion Crystals in Metallic Thin Films
- Field-Dependent Size and Shape of Single Magnetic Skyrmions
- Spin-Wave Modes and Their Intense Excitation Effects in Skyrmion Crystals
- Chiral skyrmions in thin magnetic films: new objects for magnetic storage technologies?
- Observation of magnetic excitations of skyrmion crystal in a helimagnetic insulator
- The properties of isolated chiral skyrmions in thin magnetic films
- Asymmetric Spin-wave Dispersion on Fe(110): Direct Evidence of Dzyaloshinskii--Moriya Interaction
- Thermal fluctuations of magnetic nanoparticles
- Magnon-skyrmion scattering in chiral magnets
- Magnetic Vortex Core Dynamics in a Ferromagnetic Dot
- Collective spin excitations of helices and magnetic skyrmions: review and perspectives of magnonics in non-centrosymmetric magnets
- Chiral asymmetry of the spin-wave spectra in ultrathin magnetic films
- Breathing modes of confined skyrmions in ultrathin magnetic dots
- Vortex oscillations induced by a spin-polarized current in a magnetic nanopillar: Evidence for a failure of the Thiele approach
- Spin waves in a skyrmion crystal
- Internal modes of a skyrmion in the ferromagnetic background in chiral magnets
- Magnon modes and magnon-vortex scattering in two-dimensional easy-plane ferromagnets
- Spin eigen-excitations of the magnetic skyrmion and problem of the effective mass
- Trochoidal motion and pair generation in skyrmion and antiskyrmion dynamics under spin-orbit torques
- Harmonic oscillator model for current- and field-driven magnetic vortices
- Complex magnetic phase diagram and skyrmion lifetime in an ultrathin film from atomistic simulations
- Dynamics of skyrmionic states in confined helimagnetic nanostructures
- Magnetic Excitations in the Multiferroic Néel-type Skyrmion Host GaVS
- Controlled creation and stability of kπ-skyrmions on a discrete lattice
- Phenomenology of chiral damping in noncentrosymmetric magnets
- Spin-resolved inelastic electron scattering by spin waves in noncollinear magnets
- Azimuthal Spin Wave Excitations in Magnetic Nanodots over the Soliton Background: Vortex, Bloch and Néel-like skyrmions
- Enhanced Non-Adiabaticity in Vortex Cores due to the Emergent Hall Effect
- Numerical integration of the stochastic Landau-Lifshitz-Gilbert equation in generic time-discretisation schemes
- Magnonic Crystal with Two-Dimensional Periodicity as a Waveguide for Spin Waves
- Dynamics and inertia of a skyrmion in chiral magnets and interfaces: A linear response approach based on magnon excitations
- Intrinsic non-adiabatic topological torque in magnetic skyrmions and vortices
- Control of the gyration dynamics of magnetic vortices by the magnetoelastic effect
- Influence of nonlocal damping on the field-driven domain wall motion
- Chiral damping, chiral gyromagnetism and current-induced torques in textured one-dimensional Rashba ferromagnets
- Engineering elliptical spin-excitations by complex anisotropy fields in Fe adatoms and dimers on Cu(111)
Cited by in corpus (10)
- Propagating spin excitations along skyrmion strings
- Nonreciprocity of spin waves in noncollinear magnets due to the Dzyaloshinskii-Moriya interaction
- Laser-controlled real- and reciprocal-space topology in multiferroic insulators
- Localized spin waves in isolated skyrmions
- Band filling effects on the emergence of magnetic skyrmions: Pd/Fe and Pd/Co bilayers on Ir(111)
- Skyrmions as quasiparticles: free energy and entropy
- Inertial spin waves in spin spirals
- Instability of magnetic skyrmion strings induced by longitudinal spin currents
- Design of 2D Skyrmionic Metamaterial Through Controlled Assembly
- Spin current generation driven by skyrmion dynamics under magnetic anisotropy and polarized microwaves