Guided Skyrmion Motion Along Pinning Array Interfaces
arXiv:2008.12835 · doi:10.1016/j.jmmm.2020.167710
Abstract
We examine ac driven skyrmions interacting with the interface between two different obstacle array structures. We consider drive amplitudes at which skyrmions in a bulk obstacle lattice undergo only localized motion and show that when an obstacle lattice interface is introduced, directed skyrmion transport can occur along the interface. The skyrmions can be guided by a straight interface and can also turn corners to follow the interface. For a square obstacle lattice embedded in a square pinning array with a larger lattice constant, we find that skyrmions can undergo transport in all four primary symmetry directions under the same fixed ac drive. We map where localized or translating motion occurs as a function of the ac driving parameters. Our results suggest a new method for controlling skyrmion motion based on transport along obstacle lattice interfaces.
20 pages, 11 figures
References in corpus (13)
- Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
- Skyrmion Hall Effect Revealed by Direct Time-Resolved X-Ray Microscopy
- Magnetic skyrmion logic gates: conversion, duplication and merging of skyrmions
- A new class of chiral materials hosting magnetic skyrmions beyond room temperature
- Skyrmion-skyrmion and skyrmion-edge repulsions in skyrmion-based racetrack memory
- Quantized Transport for a Skyrmion Moving on a Two-Dimensional Periodic Substrate
- Reversible Vector Ratchets for Skyrmion Systems
- Formation of Néel Type Skyrmions in an Antidot Lattice with Perpendicular Magnetic Anisotropy
- Skyrmion Dynamics and Topological Sorting on Periodic Obstacle Arrays
- Shapiro Steps and Nonlinear Skyrmion Hall Angles For dc and ac Driven Skyrmions on a Two Dimensional Periodic Substrate
- Skyrmion Dynamics and Transverse Mobility: Skyrmion Hall Angle Reversal on 2D Periodic Substrates with dc and Biharmonic ac Drives
- Skyrmion Pinball and Directed Motion on Obstacle Arrays
- Ultrafast ratchet dynamics of skyrmion by defect engineering under gigahertz magnetic fields
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- Magnus Induced Diode Effect for Skyrmions in Channels with Periodic Potentials