Stabilization and current-induced motion of antiskyrmion in the presence of anisotropic Dzyaloshinskii-Moriya interaction

Abstract

Topological defects in magnetism have attracted great attention due to fundamental research interests and potential novel spintronics applications. Rich examples of topological defects can be found in nanoscale non-uniform spin textures, such as monopoles, domain walls, vortices, and skyrmions. Recently, skyrmions stabilized by the Dzyaloshinskii-Moriya interaction have been studied extensively. However, the stabilization of antiskyrmions is less straightforward. Here, using numerical simulations we demonstrate that antiskyrmions can be a stable spin configuration in the presence of anisotropic Dzyaloshinskii-Moriya interaction. We find current-driven antiskyrmion motion that has a transverse component, namely antiskyrmion Hall effect. The antiskyrmion gyroconstant is opposite to that for skyrmion, which allows the current-driven propagation of coupled skyrmion-antiskyrmion pairs without apparent skyrmion Hall effect. The antiskyrmion Hall angle strongly depends on the current direction, and a zero antiskyrmion Hall angle can be achieved at a critic current direction. These results open up possibilities to tailor the spin topology in nanoscale magnetism, which may be useful in the emerging field of skyrmionics.

31 pages, 6 figures, to appear in Physical Review B

References in corpus (8)

• Spontaneous Skyrmion Ground States in Magnetic Metals
• Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmion at room temperature
• Skyrmion Hall Effect Revealed by Direct Time-Resolved X-Ray Microscopy
• Theory of current-driven motion of Skyrmions and spirals in helical magnets
• Capturing of a Magnetic Skyrmion with a Hole
• Real-Space Berry Phases - Skyrmion Soccer
• Quantized Transport for a Skyrmion Moving on a Two-Dimensional Periodic Substrate
• A strategy for the design of skyrmion racetrack memories

Cited by in corpus (12)

• Quantifying the Dzyaloshinskii-Moriya Interaction Induced by the Bulk Magnetic Asymmetry
• Detection of antiskyrmions by topological Hall effect in Heusler compounds
• Anisotropic Dzyaloshinskii-Moriya interaction and topological magnetism in two-dimensional magnets protected by P4-m2 crystal symmetry
• Dynamics of an elliptical ferromagnetic skyrmion driven by the spin-orbit torque
• Current-induced skyrmion motion on magnetic nanotubes
• Orientation dependent current-induced motion of skyrmions with various topologies
• Vector vorticity of skyrmionic texture: an internal degree of freedom tunable by magnetic field
• Nonlinear emergent elasticity and structural transitions of skyrmion crystal under uniaxial distortion
• Current-induced H-shaped-skyrmion creation and their dynamics in the helical phase
• Quaternary-digital data storage based on magnetic bubbles in anisotropic materials
• Chirality-induced zigzag domain wall in in-plane magnetized ultrathin films
• Simulating magnetic antiskyrmions on the lattice