通过空间调控各向异性实现磁性纳米盘中对称性可调的斯格明子与meron（涡旋半子）
Symmetry-Tunable Skyrmions and Merons in Magnetic Nanodisks via Spatially Engineered Anisotropy
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中文总结 AI 辅助
该研究通过空间调控各向异性，在无DMI的非手性磁系统中稳定了斯格明子与meron拓扑自旋纹理，实现了其可控磁响应及可重构磁振子元件的应用。
中文摘要 AI 辅助
我们证明，即使不存在Dzyaloshinskii-Moriya相互作用（DMI），空间调控的磁各向异性也能在磁性纳米盘中稳定斯格明子与meron自旋纹理。利用约束分析模型与微磁模拟，我们发现竞争的垂直各向异性与面内各向异性可在非手性磁系统中产生非共线拓扑纹理。进一步研究表明，DMI与偶极相互作用可解除螺旋度简并并选定优选手性构型；微磁模拟被用于识别物理上稳定的态。这些结果确立了各向异性图案化纳米盘作为研究无DMI拓扑自旋纹理及其可控磁响应的平台。我们还证明，各向异性调控的斯格明子阵列可通过调控其涡度排列来控制自旋波传输，为基于非手性拓扑纹理的可重构磁振子元件指明了方向。
英文摘要
We demonstrate that spatially engineered magnetic anisotropy can stabilize skyrmion and meron spin textures in magnetic nanodisks even in the absence of Dzyaloshinskii-Moriya interaction (DMI). Using a constrained analytical model and micromagnetic simulations, we show that competing perpendicular and in-plane anisotropies can generate non-collinear topological textures in non-chiral magnetic systems. We further show that DMI and dipolar interactions lift the helicity degeneracy and select preferred chiral configurations; micromagnetic simulations were used to identify physically stable states. These results establish anisotropy-patterned nanodisks as a platform for studying DMI-free topological spin textures and their controllable magnetic response. We also show that arrays of anisotropy-engineered skyrmions can control spin-wave transmission by manipulating their vorticity arrangement, pointing to reconfigurable magnonic elements based on non-chiral topological textures.
