Multifrequency Spin-Wave Propagation for Parallel Data Processing Using Microstructured Yttrium Iron Garnet Thin Films
Multifrequency Spin-Wave Propagation for Parallel Data Processing Using Microstructured Yttrium Iron Garnet Thin Films
复制标题
DOI：
10.1109/tmag.2021.3087812
复制
发表时间：
2022-02-01
影响因子：
2.1
通讯作者：
Tabata, Hitoshi
中科院分区：
文献类型：
--
作者：
Sarker, Md Shamim;Nakamura, Shumpei;Tabata, Hitoshi
自旋波(SWS)在基于波的计算中具有巨大的应用潜力，它利用了从千兆赫兹到太赫兹的广泛频谱。与光学和其他电磁波一样，SWS也承诺开启一个无需焦耳加热、低功耗的并行数据处理新时代。然而，由于缺乏对单芯片在均匀偏置磁场下的多通道联网和操作的研究，这种潜力被削弱了。提出了一种基于形状各向异性的Y-Fe石榴石(YIG)微结构矩形光波导中的多频波传播方法。实验证明了YIG光波导中静磁表面波结构的传输特性随宽度的变化。我们发现，由于沿宽度方向的退磁场，较小的波导宽度会导致较低的SWS频率。在一个装置中演示了多频短波传播，其中10、20和100微米宽的三个波导分别连接到普通天线。在均匀偏置磁场下传输了频率分别为1.98 GHz、2.11 GHz和2.18 GHz的SWS。此外，我们还研究了三个不同宽度的波导在其端部和天线一侧下方互连的器件中的SWS传输。我们观察到，由于整个波导结构被认为是一个单一的磁性体，所以互连的波导导致了具有平坦频带传输的单一谐振频率。本文的结果为复杂网络的频分复用操作提供了指导。
Spin waves (SWs) have tremendous application potential in wave-based computation utilizing a broad frequency spectrum spanning from the gigahertz-to-terahertz ranges. Like optical and other electromagnetic waves, SWs also promise to usher in a new era of parallel data processing with low-power consumption without Joule heating. However, this potential is undermined by the lack of investigation on multichannel networking and operation on single chips under a uniform bias magnetic field. This study proposes a multifrequency SW propagation based on shape anisotropy in microstructured rectangular waveguides made of yttrium iron garnet (YIG). The width-dependent transmission properties of magnetostatic surface SWs in the YIG waveguides were experimentally demonstrated. We revealed that the smaller width of the waveguide results in lower SWs frequency due to the demagnetizing field along the width direction. Multifrequency SW propagation was demonstrated in a device where three waveguides with widths of 10, 20, and 100 mu m were connected to the common antennas. SWs propagation with the frequencies of 1.98, 2.11, and 2.18 GHz have been transmitted under a uniform bias magnetic field. Furthermore, we investigated SWs transmission in a device where three waveguides with different widths were interconnected at their ends and under one side of the antenna. We observed that the interconnected waveguides result in a single resonant frequency with flat band transmission because the whole waveguide structure is considered a single magnetic body. The results presented here provide guidelines for complex networks in frequency-division multiplexing operation.