Parameter Sensitivity Study on Static and Dynamic Mechanical Properties of the Spatial Y-shaped Tied Arch Bridge

Sun, Jianpeng; Tan, Zihan; Zhang, Jiaju; Sun, Weiyi; Li, Zhu

doi:10.1007/s13296-022-00705-z

Cited by 3 publications

(1 citation statement)

References 60 publications

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“…Their twofold degenerate states offer great potential for high‐density, nonvolatile components of magnetic memories and other spintronic devices. [ 5–7 ] Therefore, precise regulation of the core reversal and in‐depth understanding of the reversal mechanism are of great significance for the application of magnetic vortices. So far, several approaches have been proven effective for controlling the reversal of magnetic vortices, for examples, external magnetic field, [ 8–14 ] spin‐polarized current, [ 12,15,16 ] microwave magnetic field, [ 17 ] spin wave, [ 3,5,18–20 ] and strain field.…”

Section: Introductionmentioning

confidence: 99%

Dzyaloshinskii–Moriya‐Interaction‐Like Behavior in Confined Permalloy Nanostructures via Coupled Magnetic Vortices

Shen

et al. 2023

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Dzyaloshinskii–Moriya interaction (DMI), one of antisymmetric exchanges, originates from the combination of low structural symmetry and large spin‐orbit coupling and favors magnetization rotations with fixed chirality. Herein, this work reports a DMI‐like behavior in permalloy via coupled vortices in confined structures. Under the in‐plane magnetic fields, continuous reversals of different coupled vortices are directly observed by in situ Lorentz transmission electron microscopy, and reproduced by complementary micromagnetic simulations. The statistical results show that coupled vortices with opposite chirality appear more frequently with the frequency up to about 60%. Such an asymmetric phenomenon mainly arises from a DMI‐like behavior, associated with the increased total energy difference between different ground‐state coupled vortices. Moreover, in the reversal process, the junction between disks accelerates the annihilation of vortices moving toward it and is also the starting point of vortex nucleation. These results provide an effective method to generate a DMI‐like behavior in magnetic systems with symmetry breaking surface and benefit the future development of vortex‐based spintronic devices.

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