论文标题
旋转波的异常折射是指导弯曲的巨峰多模层波导中的信号的一种方式
An anomalous refraction of spin waves as a way to guide signals in curved magnonic multimode waveguides
论文作者
论文摘要
我们提出了一种在镁纳米结构中有效的自旋波引导的方法。我们的技术基于超材料平板的异常折射。材料参数（饱和磁化或磁各向异性）的逐渐变化允许倾斜透射旋转波的波前并控制折射。自旋波折射的数值研究之前是由于密封区域中材料参数的变化而导致的自旋波获得的相移的分析计算。我们证明，我们的发现可用于在弯曲的波导中平滑地指导自旋波，即使是通过尖锐的弯曲，没有反射和散射不同波导模式之间的旋转，从而保留了相位 - 波浪计算必不可少的数量。
We present a method for efficient spin wave guiding within the magnonic nanostructures. Our technique is based on the anomalous refraction in the metamaterial flat slab. The gradual change of the material parameters (saturation magnetization or magnetic anisotropy) across the slab allows tilting the wavefronts of the transmitted spin waves and controlling the refraction. Numerical studies of the spin wave refraction are preceded by the analytical calculations of the phase shift acquired by the spin wave due to the change of material parameters in a confined area. We demonstrate that our findings can be used to guide the spin waves smoothly in curved waveguides, even through sharp bends, without reflection and scattering between different waveguide's modes, preserving the phase -- the quantity essential for wave computing.
