Ni80Fe20纳米点阵列中用于自旋波操纵的纳米通道
Nanochannels for Spin-Wave Manipulation in Ni80Fe20 Nanodot Arrays
摘要：
图案化磁性纳米结构是未来节能的片上通信器件的潜在候选者。在这里，我们已经实验和数值研究的作用，纳米通道操纵自旋波在Ni80Fe20连接的纳米点阵列的不同填充分数。在这些样品中观察到丰富的自旋波谱，其中自旋波模的数量随着填充分数的增加而减少，这是由于退磁场的收缩。纳米通道通过偶极交换耦合影响连接点的自旋波模式。对于所有模式，垂直纳米通道耦合纳米点，除了最高频率模式，其中所有纳米通道充当耦合器。在模拟中进一步探索了这一特征，这表明只有最高频率的模式可以通过所有的纳米通道传播，类似于电子解复用器。本研究将有助于理解纳米通道在图案化磁性纳米结构中的作用及其在基于自旋波的通信器件中的应用。
英文摘要：
Patterned magnetic nanostructures are potential candidates for future energy efficient, on-chip communication devices. Here, we have experimentally and numerically studied the role of nanochannels to manipulate spin waves in Ni80Fe20 connected nanodot arrays of varying filling fraction. Rich spin-wave spectra are observed in these samples, where the number of spin-wave modes decreases with increasing filling fraction due to the retrenchment of the demagnetizing field. The nanochannels affect the spin-wave modes of the connected dots through dipole-exchange coupling. For all modes the vertical nanochannels couple the nanodots, except for the highest frequency modes where all nanochannels act as coupler. This feature is further explored in the simulation, which reveals that only the highest frequency mode can propagate through all the nanochannels, analogues to an electronic demultiplexer. This study will be useful to understand the role of nanochannels in patterned magnetic nanostructures and their applications in spin-wave based communication 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。
