静磁自旋波中的非互易工程
Nonreciprocity engineering in magnetostatic spin waves
摘要：
由共面波导天线激发的静磁表面自旋波（MSSW）在不同的方向上传播，具有不同的振幅。这种效应，称为非互易性的MSSW，已被调查的微磁学模拟。对NiFe（Py）、CoFeAl、YIG和GaMnAs等铁磁材料，计算了两个反向传播自旋波的振幅比，即非互易参数κ.已经提出了一种装置示意图，其中κ可以通过改变装置的简单几何参数来调谐到大值。
英文摘要：
Magnetostatic surface spin waves (MSSW) excited from a coplanar waveguide antenna travel in different directions with different amplitudes. This effect, called nonreciprocity of MSSW, has been investigated by micromagnetic simulations. The ratio of amplitude of two counter propagating spin waves, the nonreciprocity parameter κ, is obtained for different ferromagnetic materials, such as NiFe (Py), CoFeAl, yttrium iron garnet (YIG), and GaMnAs. A device schematic has been proposed in which κ can be tuned to a large value by varying simple geometrical parameters of the device.
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