A mechanism to pin skyrmions in chiral magnets

Abstract

We propose a mechanism to pin skyrmions in chiral magnets by introducing local maximum of magnetic exchange strength, which can be realized in chiral magnetic thin films by engineering the local density of itinerate electrons. Thus we find a way to artificially control the position of a single skyrmion in chiral magnetic thin films. The stationary properties and the dynamical pinning and depinning processes of an isolated skyrmion around a pinning center are studied. We do a series of simulations to show that the critical current to depin a skyrmion has linearly dependence on the pinning strength. We also estimate the critical current to have order of magnitude 10^{7}\sim10^{8}A/m^{2} .

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Cited by in corpus (34)

• Particle model for skyrmions in metallic chiral magnets: dynamics, pinning and creep
• Depinning and nonequilibrium dynamic phases of particle assemblies driven over random and ordered substrates: a review
• Statics and Dynamics of Skyrmions Interacting with Pinning: A Review
• Current-driven skyrmion dynamics in disordered films
• Internal modes of a skyrmion in the ferromagnetic background in chiral magnets
• Magnus-Induced Ratchet Effects for Skyrmions Interacting with Asymmetric Substrates
• Deterministic Generation and Guided Motion of Magnetic Skyrmions by Focused He${}^{+}$-Ion Irradiation
• Skyrmion pinning energetics in thin film systems
• Manipulation of Magnetic Skyrmions by Superconducting Vortices in Ferromagnet-Superconductor Heterostructures
• Shapiro Steps for Skyrmion Motion on a Washboard Potential with Longitudinal and Transverse ac Drives
• Thermally Assisted Current-Driven Skyrmion Motion
• Theory of magnetic skyrmion glass
• Building traps for skyrmions by the incorporation of magnetic defects into nanomagnets: pinning and scattering traps by magnetic properties engineering
• Dynamics of antiferromagnetic skyrmion in absence and presence of pinning defect
• Skyrmion relaxation dynamics in the presence of quenched disorder
• Dynamics of Magnus Dominated Particle Clusters, Collisions, Pinning and Ratchets
• Eigenmodes of Neel skyrmions in ultrathin magnetic films
• Topological dynamics and current-induced motion in a skyrmion lattice
• Skyrmion pinning by disk-shaped defects
• Microscopic description of twisted magnetic Cu2OSeO3
• Shapiro Steps and Nonlinear Skyrmion Hall Angles For dc and ac Driven Skyrmions on a Two Dimensional Periodic Substrate
• Shear Banding, Intermittency, Jamming and Dynamic Phases for Skyrmions in Inhomogeneous Pinning Arrays
• Quantum Depinning of a Magnetic Skyrmion
• Commensuration Effects on Skyrmion Hall Angle and Drag for Manipulation of Skyrmions on Two-Dimensional Periodic Substrates
• Geometrically constrained Skyrmions
• Unpinning the skyrmion lattice in MnSi:Effect of substitutional disorder
• Skyrmion Generation through the Chirality Interplay of Light and Magnetism
• Late stages in the ordering of magnetic skyrmion lattices
• Skyrmions Near Defects
• Chiral Edge Currents for ac Driven Skyrmions in Confined Pinning Geometries
• Generation of magnetic skyrmions through pinning effect
• The relation between the radii and the densities of magnetic skyrmions
• Discretization error analysis for a radially symmetric harmonic map heat flow problem
• Positional stability of skyrmions in a racetrack memory with notched geometry