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arXiv 1704.02255cond-mat.mes-hall
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可重构纳米级自旋波定向耦合器

Reconfigurable nano-scale spin-wave directional coupler

Qi Wang, Philipp Pirro, Roman Verba, Andrei Slavin, Burkard Hillebrands, Andrii V. Chumak

摘要:

提出了一种由两个横向平行的纳米尺度偶极耦合自旋波波导组成的自旋波定向耦合器,并利用微磁学模拟和解析理论对其进行了研究。在传播过程中在一个波导中激发的SW的能量周期性地转移到另一个波导并返回,并且这种转移的空间半周期被定义为耦合长度。耦合长度由波导之间的偶极耦合确定,并且在设备输出处转移到另一波导的SW能量的分数可以随着SW频率、偏置磁场和波导的静态磁化的相对取向而变化。所提出的定向耦合器的设计可以用于面向数字计算的磁振子作为磁振子导管的连接器(多路复用器)而不直接接触,或者在模拟微波信号处理中作为可重构的纳米级功率分配器和/或频率分离器。

英文摘要:

A spin-wave (SW) directional coupler comprised of two laterally parallel nano-scale dipolarly-coupled SW waveguides is proposed and studied using micromagnetic simulations and analytical theory. The energy of a SW excited in one of the waveguides in the course of propagation is periodically transferred to the other waveguide and back, and the spatial half-period of this transfer is defined as the coupling length. The coupling length is determined by the dipolar coupling between the waveguides, and the fraction of the SW energy transferred to the other waveguide at the device output can be varied with the SW frequency, bias magnetic field, and relative orientation of the waveguide's static magnetizations. The proposed design of a directional coupler can be used in digital computing-oriented magnonics as a connector (multiplexer) of magnonic conduits without a direct contact, or in the analog microwave signal processing as a reconfigurable nano-scale power divider and/or frequency separator.

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。

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