Stabilization and dynamics of magnetic antivortices in a nanodisk with anisotropic Dzyaloshinskii-Moriya interaction
arXiv:2405.08437 · doi:10.1103/PhysRevB.110.014437
Abstract
We theoretically investigate the antivortex stabilized by anisotropic Dzyaloshinskii-Moriya interaction (DMI) in nanodisks. It is remarkably found that the antivortex remains stable even when the nanodisk radius is reduced to 15 nm, owing to the short-range nature of the DMI. We also investigate the antivortex dynamics under a static in-plane magnetic field, which shows that the displacement of the antivortex core depends on its vorticity and helicity, providing a fundamental basic for distinguishing different vortex types. Additionally, spin-polarized currents can trigger a self-sustained gyration of the antivortex at low current densities, while inducing polarity switching at high current densities. Our findings offer valuable insights into the DMI role in stabilizing topological solitons and their potential applications in spin-torque nano-oscillators and magnetic memories.
arXiv comment8 pages and 7 figures
References in corpus (30)
- Skyrmion Lattice in a Chiral Magnet
- The design and verification of Mumax3
- Skyrmion confinement in ultrathin film nanostructures in the presence of Dzyaloshinskii-Moriya interaction
- Discovery of Magnetic Antiskyrmions Beyond Room Temperature in Tetragonal Heusler Materials
- The properties of isolated chiral skyrmions in thin magnetic films
- Antiskyrmions stabilized at interfaces by anisotropic Dzyaloshinskii-Moriya interaction
- A skyrmion-based spin-torque nano-oscillator
- Stability of magnetic vortex in soft magnetic nano-sized circular cylinder
- Polarisation selective magnetic vortex dynamics and core reversal in rotating magnetic fields
- Manipulation of Dzyaloshinskii-Moriya interaction in Co/Pt multilayers with strain
- Current-Driven Dynamics of Magnetic Hopfions
- Stabilization and current-induced motion of antiskyrmion in the presence of anisotropic Dzyaloshinskii-Moriya interaction
- Room-temperature antiskyrmions and sawtooth surface textures in a noncentrosymmetric magnet with symmetry
- Anisotropic Dzyaloshinskii-Moriya Interaction in ultra-thin epitaxial Au/Co/W(110)
- Magnetic radial vortex stabilization and efficient manipulation driven by the Dzyaloshinskii Moriya Interaction and the spin-transfer torque
- Micromagnetics of anti-skyrmions in ultrathin films
- Spin-Wave Spectrum in Magnetic Nanodot with Continuous Transition between Vortex, Bloch-type Skyrmion and Néel-type Skyrmion States
- Map of metastable states for thin circular magnetic nano-cylinders
- Theory of vortex states in magnetic nanodisks with induced Dzyaloshinskii-Moriya interactions
- Anti-vortex state in cross-like nanomagnets
- Ultrafast dynamics of a magnetic antivortex - Micromagnetic simulations
- Higher-order topological solitonic insulators
- Anisotropic Dzyaloshinskii-Moriya interaction and topological magnetism in two-dimensional magnets protected by P4-m2 crystal symmetry
- Chaos in Magnetic Nanocontact Vortex Oscillators
- Azimuthal Spin Wave Excitations in Magnetic Nanodots over the Soliton Background: Vortex, Bloch and Néel-like skyrmions
- Anisotropic Dzyaloshinskii-Moriya interaction protected by D2d crystal symmetry in two-dimensional ternary compounds
- Observation of Magnetic Radial Vortex Nucleation in a Multilayer Stack with Tunable Anisotropy
- Edge-Soliton-Mediated Vortex-Core Reversal Dynamics
- A semi-analytical approach to calculating the dynamic modes of magnetic vortices with Dzyaloshinskii-Moriya interactions
- Effect of Dzyaloshinskii-Moriya interaction on magnetic vortex switching driven by radial spin waves