Skyrmion bound state and dynamics in an antiferromagnetic bilayer racetrack
arXiv:2109.04232 · doi:10.1016/j.jmmm.2021.168997
Abstract
We investigate the dynamics of two skyrmions lying in distinct layers of an antiferromagnetic bilayer system, consisting of nanostripes with the shape of racetracks. The top and bottom nanostripes are separated by a height offset and they are coupled through a ferromagnetic exchange, allowing the interaction between the skyrmions from both layers. Depending on the distance between the skyrmions they attract each other sufficiently to achieve a bound state. We also analyze their dynamics when an electric current is applied in a unique layer and we determine how the bound-state nucleation depends on the current density and vertical distance between the skyrmions. Finally, we analyzed the robustness of the bound states by considering two situations: 1) a system constituted by clean or homogeneous antiferromagnetic racetracks; 2) a system in which randomly distributed magnetic impurities in both layers are included in the system.
arXiv comment8 pages, 7 figures
References in corpus (28)
- Spontaneous Skyrmion Ground States in Magnetic Metals
- Observation of room temperature magnetic skyrmions and their current-driven dynamics in ultrathin Co films
- Direct Observation of the Skyrmion Hall Effect
- Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmion at room temperature
- Skyrmions at room temperature : From magnetic thin films to magnetic multilayers
- Skyrmion confinement in ultrathin film nanostructures in the presence of Dzyaloshinskii-Moriya interaction
- Skyrmion Hall Effect Revealed by Direct Time-Resolved X-Ray Microscopy
- Tunable Room Temperature Magnetic Skyrmions in Ir/Fe/Co/Pt Multilayers
- Theory of current-driven motion of Skyrmions and spirals in helical magnets
- Static and Dynamical Properties of Antiferromagnetic Skyrmions in the Presence of Applied Current and Temperature
- Magnetic bilayer-skyrmions without skyrmion Hall effect
- Dynamics of Skyrmion Crystals in Metallic Thin Films
- Interface-driven topological Hall effect in SrRuO-SrIrO bilayer
- Antiferromagnetic Skyrmion: Stability, Creation and Manipulation
- Current-driven dynamics and inhibition of the skyrmion Hall effect of ferrimagnetic skyrmions in GdFeCo films
- Current-induced skyrmion generation and dynamics in symmetric bilayers
- Phase-Change Control of Interlayer Exchange Coupling
- Fractional antiferromagnetic skyrmion lattice induced by anisotropic couplings
- Current-Driven Skyrmion Dynamics and Drive-Dependent Skyrmion Hall Effect in an Ultrathin Film
- Engineering skyrmions in transition-metal multilayers for spintronics
- Skyrmions in a Doped Antiferromagnet
- Quantum Collapse of a Magnetic Skyrmion
- Suppression of the skyrmion Hall effect in planar nanomagnets by the magnetic properties engineering: Skyrmion transport on nanotracks with magnetic strips
- Universality of annihilation barriers of large magnetic skyrmions in chiral and frustrated magnets
- Coupling of skyrmions mediated by RKKY interaction
- Role of impurity clusters for the current-driven motion of magnetic Skyrmions
- Traps for pinning and scattering of antiferromagnetic skyrmions via magnetic properties engineering
- Room-temperature insulating ferromagnetic (Ni,Co)1+2xTi1-xO3 thin films