Current-Controlled Skyrmion Number in Confined Ferromagnetic Nanostripes
arXiv:2311.17411 · doi:10.1002/adfm.202304044
Abstract
Skyrmions are vortex-like localized magnetic structures that possess an integer-valued topological index known as the skyrmion number or topological charge. Skyrmion number determines the topology-related emergent magnetism, which is highly desirable for advanced storage and computing devices. In order to achieve device functions, it is necessary to manipulate the skyrmion number in confined nanostructured geometries using electrical methods. Here, we report the reliable current-controlled operations for manipulating the skyrmion number through reversible topological transformations between skyrmion chains and stripe domains in confined Fe3Sn2 nanostripes. The results of micromagnetic simulations are successful in numerically reproducing our experiments and explaining them through the combined effect of current-induced Joule heating and magnetic hysteresis. These findings hold the potential to advance the development of topological spintronic devices.
https://doi.org/10.1002/adfm.202304044
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 Bundles and Their Current-Driven Dynamics
- Direct imaging of a zero-field target skyrmion and its polarity switch in a chiral magnetic nanodisk
- Tailoring magnetic energies to form dipole skyrmions and skyrmion lattices
- Spin-orbit torque-driven skyrmion dynamics revealed by time-resolved X-ray microscopy
- Current-Induced Helicity Reversal of a Single Skyrmionic Bubble Chain in a Nanostructured Frustrated Magnet
- Two-dimensional characterization of three-dimensional magnetic bubbles in FeSn nanostructures
- Current-Controlled Topological Magnetic Transformations in a Nanostructured Kagome Magnet
- Tunable room temperature magnetic skyrmions in centrosymmetric kagome magnet MnGaSn
- Targeted Writing and Deleting of Magnetic Skyrmions in Two-Terminal Nanowire Devices
- Skyrmion fluid and bimeron glass protected by a chiral spin liquid on a kagome lattice
- Combined Magnetic Imaging and Anisotropic Magnetoresistance Detection of Dipolar Skyrmions