Complete mapping of the spin-wave spectrum in vortex state nano-disk

Abstract

We report a study on the complete spin-wave spectrum inside a vortex state nano-disk. Transformation of this spectrum is continuously monitored as the nano-disk becomes gradually magnetized by a perpendicular magnetic field and encouters a second order phase transition to the uniformly magnetized state. This reveals the bijective relationship that exists between the eigen-modes in the vortex state with the ones in the saturated state. It is found that the gyrotropic mode can be continuously viewed as a uniform phase precession, which uniquely softens (its frequency vanishes) at the saturation field to transform above into the Kittel mode. By contrast the other spin-wave modes remain finite as a function of the applied field while their character is altered by level anti-crossing.

References in corpus (16)

• Imaging of Spin Dynamics in Closure Domain and Vortex Structures
• Generation of coherent spin-wave modes in Yttrium Iron Garnet microdiscs by spin-orbit torque
• Breathing modes of confined skyrmions in ultrathin magnetic dots
• Electronic control of the spin-wave damping in a magnetic insulator
• Boundary conditions for magnetization in magnetic nano-elements
• Interactions of spin waves with a magnetic vortex
• Vortex state oscillations in soft magnetic cylindrical dots
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• Ferromagnetic resonance force spectroscopy of individual sub-micron size samples
• Identification and selection rules of the spin-wave eigen-modes in a normally magnetized nano-pillar
• Dynamic origin of azimuthal modes splitting in vortex-state magnetic dots
• Vortex dynamics in confined stratified conditions
• Origin of spectral purity and tuning sensitivity in a vortex-based spin transfer nano-oscillator
• Bubble domains in disc-shaped ferromagnetic particles
• Measurement of the dynamical dipolar coupling in a pair of magnetic nano-disks using a Ferromagnetic Resonance Force Microscope
• Precise probing spin wave mode frequencies in the vortex state of circular magnetic dots

Cited by in corpus (18)

• Excitation of whispering gallery magnons in a magnetic vortex
• Spin-Wave Spectrum in Magnetic Nanodot with Continuous Transition between Vortex, Bloch-type Skyrmion and Néel-type Skyrmion States
• Nonlocal stimulation of three-magnon splitting in a magnetic vortex
• Theory of three-magnon interaction in a vortex-state magnetic nanodot
• Pushing down the lateral dimension of single and coupled magnetic dots to the nanometric scale: characteristics and evolution of the spin-wave eigenmodes
• Finite-element dynamic-matrix approach for propagating spin waves: Extension to mono- and multilayers of arbitrary spacing and thickness
• Interplay between spin wave and magnetic vortex
• Dynamics of Spiral Spin Waves in Magnetic Nano-patches: Influence of Thickness and Shape
• Beyond the gyrotropic motion: dynamic C-state in vortex spin torque oscillators
• Exchange-mediated, non-linear, out-of-plane magnetic field dependence of the ferromagnetic vortex gyrotropic mode frequency driven by core deformation
• Nontrivial Aharonov-Bohm effect and alternating dispersion of magnons in cone-state ferromagnetic rings
• Time-domain imaging of curling modes in a confined magnetic vortex and a micromagnetic study exploring the role of spiral spin waves emitted by the core
• Unusual spin-wave dynamics in core-shell magnetic nanodisks
• A multi-band analogue frequency sensor with sub-MHz resolution based on a Vortex Nano-Oscillator
• Time-resolved observation of magnon splitting into vortex gyration and Floquet spin waves
• Field Theory of Linear Spin-Waves in Finite Textured Ferromagnets
• Hippopede curves for modelling radial spin waves in an azimuthal graded magnonic landscape
• Finite-element dynamic-matrix approach for spin-wave dispersions in magnonic waveguides with arbitrary cross section