Reconfigurable nanoscale spin-wave directional coupler.
Reconfigurable nanoscale spin-wave directional coupler.
复制标题
可重新配置的纳米级旋转波动方向耦合器。
DOI：
10.1126/sciadv.1701517
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发表时间：
2018-01
期刊：
影响因子：
13.6
通讯作者：
Chumak AV
中科院分区：
文献类型：
--
作者：
Wang Q;Pirro P;Verba R;Slavin A;Hillebrands B;Chumak AV
我们提出了一种可以实现磁子集成电路的纳米级自旋波定向耦合器。自旋波及其量子磁子是未来信号处理系统中潜在的数据载体，因为与自旋波传播相关的吉尔伯特损耗可以大大低于电子设备中的焦耳热损失。虽然个别的自旋波信号处理装置已经成功地被开发出来，但当代具有挑战性的问题是形成二维平面集成自旋波电路。结合微磁模型和解析理论，我们提出了一种基于两个横向相邻的纳米自旋波波导之间的偶极相互作用的有效解。基于这一原理研制的器件可以作为一种多功能的、动态可重构的信号定向耦合器来实现波导交叉元件、可调功分器、频率分离器或多路复用器的功能。所提出的自旋波定向耦合器的设计既可用于用于自旋波计算的数字逻辑电路，也可用于模拟微波信号处理设备。
We propose a nanoscale spin-wave directional coupler that allows the realization of magnonic integrated circuits. Spin waves, and their quanta magnons, are prospective data carriers in future signal processing systems because Gilbert damping associated with the spin-wave propagation can be made substantially lower than the Joule heat losses in electronic devices. Although individual spin-wave signal processing devices have been successfully developed, the challenging contemporary problem is the formation of two-dimensional planar integrated spin-wave circuits. Using both micromagnetic modeling and analytical theory, we present an effective solution of this problem based on the dipolar interaction between two laterally adjacent nanoscale spin-wave waveguides. The developed device based on this principle can work as a multifunctional and dynamically reconfigurable signal directional coupler performing the functions of a waveguide crossing element, tunable power splitter, frequency separator, or multiplexer. The proposed design of a spin-wave directional coupler can be used both in digital logic circuits intended for spin-wave computing and in analog microwave signal processing devices.
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