arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.09392cond-mat.mtrl-sci
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具有不同拓扑荷的Skyrmionic结构中的自旋波

Spin waves in skyrmionic structures with various topological charges

Levente Rózsa, Markus Weißenhofer, Ulrich Nowak

摘要:

平衡性质和局部磁振子激发拓扑不同skyrmionic纹理的影响。观察到的形状的结构和它们的取向上的晶格解释的基础上,它们的涡旋和晶体的对称性。根据不同织构之间的能量差,理解了不同织构之间的转变及其湮灭作为磁场的函数。的角动量自旋波本征模式的特征的圆柱对称结构相结合的扭曲的自旋配置,导致避免交叉的磁振子谱。的skyrmionic纹理均匀的外场的敏感性计算,揭示了大量的模式成为可检测的角动量本征模之间的杂交由于。这些发现将有助于通过实验和数值模拟来观察扭曲skyrmionic结构中的自旋波,拓宽其在磁振子器件中的可能应用范围。

英文摘要:

Equilibrium properties and localised magnon excitations are investigated in topologically distinct skyrmionic textures. The observed shape of the structures and their orientation on the lattice is explained based on their vorticities and the symmetry of the crystal. The transformation between different textures and their annihilation as a function of magnetic field is understood based on the energy differences between them. The angular momentum spin-wave eigenmodes characteristic of cylindrically symmetric structures are combined in the distorted spin configurations, leading to avoided crossings in the magnon spectrum. The susceptibility of the skyrmionic textures to homogeneous external fields is calculated, revealing that a high number of modes become detectable due to the hybridization between the angular momentum eigenmodes. These findings should contribute to the observation of spin waves in distorted skyrmionic structures via experiments and numerical simulations, widening the range of their possible applications in magnonic devices.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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