论文标题
双构成人造自旋冰中的晶格相互作用启用了新兴的自旋动力学
Emergent spin dynamics enabled by lattice interactions in a bicomponent artificial spin ice
论文作者
论文摘要
人造自旋冰（ASI）是纳米磁铁上的阵列，既可以用作原子自旋冰挫败的模型，又可以探索基于自旋波的新策略以传输，处理和存储信息。在这里，我们利用了在正方形ASI的免费晶格位点上排列的两个不同铁磁金属的磁化动力学的复杂相互作用，以有效地调节自旋波性能。我们表明，两个转子之间的相互作用导致每个sublattice归因于独特的光谱，并且我们观察到两种材料的独特磁化特性促进的晶格和内部和内部内部动力学。动态特性是通过角依赖性宽带铁磁共振系统研究的，并通过微磁模拟确认。我们表明，与磁性不同的材料的组合可以实现广泛的二维结构，这可能打开了纳米磁学新概念的大门。
Artificial spin ice (ASI) are arrays on nanoscaled magnets that can serve both as models for frustration in atomic spin ice as well as for exploring new spin-wave-based strategies to transmit, process, and store information. Here, we exploit the intricate interplay of the magnetization dynamics of two dissimilar ferromagnetic metals arranged on complimentary lattice sites in a square ASI to effectively modulate the spin-wave properties. We show that the interaction between the two sublattices results in unique spectra attributed to each sublattice and we observe inter- and intra-lattice dynamics facilitated by the distinct magnetization properties of the two materials. The dynamic properties are systematically studied by angular-dependent broadband ferromagnetic resonance and confirmed by micromagnetic simulations. We show that the combination of materials with dissimilar magnetic properties enables the realization of a wide range of two-dimensional structures potentially opening the door to new concepts in nanomagnonics.
