Current-driven Dynamics of Skyrmion Bubbles in Achiral Uniaxial Magnets
arXiv:2205.03641 · doi:10.1088/1674-1056/ac6db1
Abstract
We report dynamics of skyrmion bubbles driven by spin-transfer torque in achiral ferromagnetic nanostripes using micromagnetic simulations. In a three-dimensional uniaxial ferromagnet with a quality factor that is smaller than 1, the skyrmion bubble is forced to stay at the central nanostripe by a repulsive force from the geometry border. The coherent motion of skyrmion bubbles in the nanostripe can be realized by increasing the quality factor to ~3.8. Our results should propel the design for future spintronic devices such as artificial neural computing and racetrack memory based on dipole-stabilized skyrmion bubbles.
References in corpus (22)
- Skyrmion Lattice in a Chiral Magnet
- The design and verification of Mumax3
- Observation of room temperature magnetic skyrmions and their current-driven dynamics in ultrathin Co films
- Blowing Magnetic Skyrmion Bubbles
- Roles of non-equilibrium conduction electrons on magnetization dynamics of ferromagnets
- Spin Transfer Torques in MnSi at Ultra-low Current Densities
- Direct Observation of the Skyrmion Hall Effect
- Current-induced skyrmion dynamics in constricted geometries
- Theory of current-driven motion of Skyrmions and spirals in helical magnets
- Magnetic skyrmion artificial synapse for neuromorphic computing
- Berry Phase Theory of Anomalous Hall Effect: Application to Colossal Magnetoresistance Manganites
- Topological Hall effect and Berry phase in magnetic nanostructures
- Skyrmion-skyrmion and skyrmion-edge repulsions in skyrmion-based racetrack memory
- Magnetic skyrmion-based synaptic devices
- Hybrid chiral domain walls and skyrmions in magnetic multilayers
- Magnetic Skyrmion Bundles and Their Current-Driven Dynamics
- Tailoring magnetic energies to form dipole skyrmions and skyrmion lattices
- Giant generic topological Hall resistivity of MnSi under pressure
- Skyrmion ground state and gyration of skyrmions in magnetic nanodisks without the Dzyaloshinsky-Moriya interaction
- Two-dimensional characterization of three-dimensional magnetic bubbles in FeSn nanostructures
- Skyrmion ratchet propagation: Utilizing the skyrmion Hall effect in AC racetrack storage devices
- Spintronics via non-axisymmetric chiral skyrmions