Suppression of the skyrmion Hall effect in planar nanomagnets by the magnetic properties engineering: Skyrmion transport on nanotracks with magnetic strips
arXiv:1912.03403 · doi:10.1016/j.jmmm.2020.166655
Abstract
Micromagnetic simulations have been performed to investigate the suppression of the skyrmion Hall effect in nanotracks with their magnetic properties strategically modified. In particular, we study two categories of magnetically modified nanotracks. One of them, repulsive edges have been inserted in the nanotrack and, in the other, an attractive strip has been placed exactly on the longest axis of the nanotrack. Attractive and repulsive interactions can be generated from the engineering of magnetic properties. For instance, it is known that the skyrmion can be attracted to a region where the exchange stiffness constant is decreased. On the other hand, the skyrmion can be repelled from a region characterized by a local increase in the exchange stiffness constant. In order to provide a background for experimental studies, we vary not only the magnetic material parameters (exchange stiffness, perpendicular magnetocrystalline anisotropy and the Dzyaloshinskii-Moriya constant) but also the width of the region magnetically modified, containing either a local reduction or a local increase for each one of these magnetic properties. In the numerical simulations, the skyrmion motion was induced by a spin-polarized current and the found results indicate that it is possible to transport skyrmions around the longest axis of the nanotrack. In practice, the skyrmion Hall effect can be completely suppressed in magnetic nanotracks with strategically modified magnetic properties. Furthermore, we discuss in detail 6 ways to suppress the skyrmion Hall effect by the usage of nanotracks with repulsive edges and nanotracks with an attractive strip.
References in corpus (29)
- Skyrmion Lattice in a Chiral Magnet
- Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
- 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
- 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
- Room temperature chiral magnetic skyrmion in ultrathin magnetic nanostructures
- Skyrmion confinement in ultrathin film nanostructures in the presence of Dzyaloshinskii-Moriya interaction
- Current-induced skyrmion dynamics in constricted geometries
- Skyrmion Hall Effect Revealed by Direct Time-Resolved X-Ray Microscopy
- Skyrmion Lattice in a Doped Semiconductor
- Anatomy of Dzyaloshinskii-Moriya Interaction at Co/Pt Interfaces
- Static and Dynamical Properties of Antiferromagnetic Skyrmions in the Presence of Applied Current and Temperature
- Magnetic bilayer-skyrmions without skyrmion Hall effect
- Field-Dependent Size and Shape of Single Magnetic Skyrmions
- Antiferromagnetic Skyrmion: Stability, Creation and Manipulation
- Chiral skyrmions in thin magnetic films: new objects for magnetic storage technologies?
- A reversible conversion between a skyrmion and a domain-wall pair in junction geometry
- Ground state search, hysteretic behaviour, and reversal mechanism of skyrmionic textures in confined helimagnetic nanostructures
- Skyrmion Generation by Current
- Effects of spatially engineered Dzyaloshinskii-Moriya interaction in ferromagnetic films
- Overcoming the speed limit in skyrmion racetrack devices by suppressing the skyrmion Hall effect
- High-topological-number magnetic skyrmions and topologically protected dissipative structure
- Manipulation of skyrmions in nanodisks with a current pulse and skyrmion rectifier
- Building traps for skyrmions by the incorporation of magnetic defects into nanomagnets: pinning and scattering traps by magnetic properties engineering
- Topological Excitations in Magnetic Materials
- Skyrmion-induced bound states on the surface of 3D Topological Insulators
Cited by in corpus (8)
- Typical skyrmions versus bimerons: a long-distance competition in ferromagnetic racetracks
- Programmable skyrmion logic gates based on skyrmion tunneling
- Zero-field skyrmionic states and in-field edge-skyrmions induced by boundary tuning
- Fundamental Theory of Current-Induced Motion of Magnetic Skyrmions
- Engineering antiferromagnetic skyrmions and antiskyrmions at metallic interfaces
- Traps for pinning and scattering of antiferromagnetic skyrmions via magnetic properties engineering
- Skyrmion bound state and dynamics in an antiferromagnetic bilayer racetrack
- Skyrmion confinement and dynamics in tracks patterned with magnetic anisotropy: theory and simulations