High-frequency modes in a magnetic buckyball nanoarchitecture
High-frequency modes in a magnetic buckyball nanoarchitecture
复制标题
磁性巴基球纳米结构中的高频模式
作者：
R. Cheenikundil;J. Bauer;Mehrdad Goharyan;M. d’Aquino;R. Hertel
近年来，磁性纳米结构作为一种新型的磁性材料出现，具有薄膜几何结构所不具有的物理特性。互连的纳米线阵列产生三维版本的人工自旋冰在这一材料类别中特别感兴趣。尽管人们对这一主题的兴趣越来越大，但这些系统的一些性质仍然未被探索。在这里，我们研究，通过微磁模拟，在巴基球型磁性纳米结构的高频动态模式的发展。我们得到了一个特征激发谱，并分析了相应的模式配置文件和它们的磁场依赖性。磁共振定位在结构的不同几何成分处，并且取决于局部磁配置。这些特点预示了这种系统的潜力，可重编程磁振子器件的应用与几何可调频率。
Artificially fabricated three-dimensional magnetic nanostructures have recently emerged as a new type of magnetic material with the potential of displaying physical properties absent in thin-film geometries. Interconnected nanowire arrays yielding three-dimensional versions of artificial spin-ices are of particular interest within this material category. Despite growing interest in the topic, several properties of these systems are still unexplored. Here, we study, through micromagnetic simulations, the high-frequency dynamic modes developing in buckyball-type magnetic nanoarchitectures. We obtain a characteristic excitation spectrum and analyze the corresponding mode profiles and their magnetic field dependence. The magnetic resonances are localized at different geometric constituents of the structure and depend on the local magnetic configuration. These features foreshow the potential of such systems for reprogrammable magnonic device applications with geometrically tunable frequencies.
影响因子：
9.9
作者：
Williams, Gwilym;Hunt, Matthew;Ladak, Sam
通讯作者：
Ladak, Sam
影响因子：
2.7
作者：
Baker, Alexander;Beg, Marijan;Fangohr, Hans
通讯作者：
Fangohr, Hans