Dynamics of the collapse of a ferromagnetic skyrmion in a centrosymmetric lattice
arXiv:2203.05342 · doi:10.1103/PhysRevB.105.134432
Abstract
Time dependence of the size and chirality of a ferromagnetic skyrmion in a Heisenberg model with the magnetic field on a square lattice has been studied analytically and numerically. The lattice and the magnetic field generate strong time dependence of the skyrmion chirality. Due to nonlinearity, the lattice alone also generates strong intrinsic damping that leads to the skyrmion collapse via the emission of spin waves. In the absence of the magnetic field the collapse is slow for a large skyrmion but it becomes exponentially fast in the presence of the Landau-Lifshitz damping when the field is turned on. Magnons emitted by a collapsing skyrmion must have a discrete spectrum due to the quantization of the skyrmion magnetic moment.
arXiv comment8 pages, 9 figures
References in corpus (28)
- Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
- Spontaneous Skyrmion Ground States in Magnetic Metals
- Multiply periodic states and isolated skyrmions in an anisotropic frustrated magnet
- Berry Phase Theory of Anomalous Hall Effect: Application to Colossal Magnetoresistance Manganites
- Skyrmion-electronics: Writing, deleting, reading and processing magnetic skyrmions toward spintronic applications
- The properties of isolated chiral skyrmions in thin magnetic films
- Ginzburg-Landau theory for skyrmions in inversion-symmetric magnets with competing interactions
- Physical foundations and basic properties of magnetic skyrmions
- Skyrmion dynamics in a frustrated ferromagnetic film and current-induced helicity locking-unlocking transition
- Laser-Induced Skyrmion Writing and Erasing in an Ultrafast Cryo-Lorentz Transmission Electron Microscopy
- Path to collapse for an isolated Néel skyrmion
- The Magnus Force on Skyrmions in Ferromagnets and the Quantum Hall Effect
- Spin eigen-excitations of the magnetic skyrmion and problem of the effective mass
- Thermal stability of metastable magnetic skyrmions: Entropic narrowing and significance of internal eigenmodes
- Complex magnetic phase diagram and skyrmion lifetime in an ultrathin film from atomistic simulations
- Skyrmion in a real magnetic film
- Paths to collapse for isolated skyrmions in few-monolayer ferromagnetic films
- Skyrmion lifetimes in ultrathin films
- Quantum Dynamics of Skyrmions in Chiral Magnets
- Mechanisms of skyrmion collapse revealed by sub-nm maps of the transition rate
- Quantum Collapse of a Magnetic Skyrmion
- Collapse of Skyrmions in 2d Ferro- and Antiferromagnets
- Atomistic perspective of long lifetimes of small skyrmions at room temperature
- Skyrmion zoo in graphene at charge neutrality in a strong magnetic field
- Writing Skyrmions with a Magnetic Dipole
- Topological solitons in highly anisotropic two dimensional ferromagnets
- Thermal Collapse of a Skyrmion
- Quantum States of a Skyrmion in a 2D Antiferromagnet