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首页> 外文期刊>IEEE Transactions on Magnetics >Generation of Propagating Spin Waves From Edges of Magnetic Nanostructures Pumped by Uniform Microwave Magnetic Field
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Generation of Propagating Spin Waves From Edges of Magnetic Nanostructures Pumped by Uniform Microwave Magnetic Field

机译:从均匀微波磁场泵浦的磁性纳米结构的边缘产生传播的自旋波

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摘要

Thin-film patterned magnetic nanostructures are widely employed within perceived magnonic device architectures to guide and/or manipulate spin waves for data processing and communication purposes. Here, using micromagnetic simulations, we explore how the internal magnetic field nonuniformity inherent to patterned magnetic nanostructures can also be exploited to create spin-wave sources. The spin-wave emission is achieved through the resonant excitation of finite-sized regions of increased effective magnetic field formed near the edges of patterned structures. The phenomenon is rather universal and could be used to generate magnetodipole, dipole-exchange, and exchange dominated spin waves. Depending on the frequency of excitation and parameters of the nanostructures, the emitted spin waves may form either highly directional spin-wave caustic beams or more regular plane spin waves.
机译:薄膜图案化的磁性纳米结构被广泛地用于感知的电子设备结构中,以引导和/或操纵自旋波以进行数据处理和通信。在这里,使用微磁模拟,我们探索了如何也可以利用图案化的磁性纳米结构固有的内部磁场不均匀性来创建自旋波源。自旋波发射是通过共振激发形成在图案化结构边缘附近的有效磁场的有限大小区域来实现的。这种现象相当普遍,可用于产生磁偶极子,偶极子交换和交换主导的自旋波。取决于激发的频率和纳米结构的参数,所发射的自旋波可形成高度定向的自旋波苛性束或更规则的平面自旋波。

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