Breathing modes of confined skyrmions in ultrathin magnetic dots

Abstract

The dynamics of individual magnetic skyrmions confined in ultrathin film dots is studied theoretically. The systems considered are transition metal ferromagnets possessing perpendicular magnetic anisotropy and particular attention is given to the dynamic response of the skyrmions to perpendicular driving fields. By using micromagnetics simulations, it is shown that breathing modes can hybridize with geometrically-quantized spin wave eigenmodes of the circular dots considered, leading to distinct features in the power spectrum that differ to the behavior expected for uniformly magnetized systems. The field dependence of the breathing modes offers a direct means of detecting and characterizing such skyrmion states in experiment.

arXiv comment7 pages, 7 figures

References in corpus (19)

• Skyrmion Lattice in a Chiral Magnet
• Spontaneous Skyrmion Ground States in Magnetic Metals
• Current-driven dynamics of chiral ferromagnetic domain walls
• Topological Hall effect in the A-phase of MnSi
• Spin Transfer Torques in MnSi at Ultra-low Current Densities
• Dynamics of Dzyaloshinskii domain walls in ultrathin magnetic films
• Emergent electrodynamics of skyrmions in a chiral magnet
• Skyrmion confinement in ultrathin film nanostructures in the presence of Dzyaloshinskii-Moriya interaction
• Current-induced skyrmion dynamics in constricted geometries
• Chiral skyrmions in thin magnetic films: new objects for magnetic storage technologies?
• Asymmetric Magnetic Domain-Wall Motion by the Dzyaloshinskii-Moriya Interaction
• Observation of magnetic excitations of skyrmion crystal in a helimagnetic insulator
• MuMax: a new high-performance micromagnetic simulation tool
• Inertia and chiral edge modes of a skyrmion magnetic bubble
• Chirality-induced asymmetric magnetic nucleation in Pt/Co/AlOx ultrathin microstructures
• Current induced rotational torques in the skyrmion lattice phase of chiral magnets
• Nonreciprocal spin-wave channeling along textures driven by the Dzyaloshinskii-Moriya interaction
• Skyrmion ground state and gyration of skyrmions in magnetic nanodisks without the Dzyaloshinsky-Moriya interaction
• Thermal vortex dynamics in thin circular ferromagnetic nanodisks

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