论文标题
垂直磁化膜的自旋波衍射模型
Spin wave diffraction model for perpendicularly magnetized films
论文作者
论文摘要
我们为垂直磁性膜中的自旋波提供了一个近场衍射模型，适用于任何激发场的几何形状。该模型依靠kalinikos-slavin形式主义来表达k空间中的动态敏感性张量，并通过反应函数的反二维变换来计算衍射模式。我们在两种不同的天线几何形状上显示了模型和MUMAX3微磁模拟之间的出色定量一致性。我们的方法基准在垂直磁化膜中基准旋转波衍射，并且很容易适用于磁珠形成和干涉设备的未来设计。
We present a near-field diffraction model for spin waves in perpendicularly magnetized films applicable in any geometries of excitation fields. This model relies on Kalinikos-Slavin formalism to express the dynamic susceptibility tensor in k-space, and calculate the diffraction patterns via inverse 2D-Fourier transform of the response functions. We show an excellent quantitative agreement between our model and MuMax3 micro-magnetic simulations on two different geometries of antennas. Our method benchmarks spin wave diffraction in perpendicularly magnetized films, and is readily applicable for future designs of magnon beamforming and interferometric devices.
