论文标题
边缘旋转波通过三角形点中的顶点域壁的传播
Edge spin wave transmission through a vertex domain wall in triangular dots
论文作者
论文摘要
旋转波（SWS）通常会被域壁反射，也可以沿它们引导。边缘壁壁产生有趣的，并且可能适用于宽带自旋波的真实设备特性，将其限制在结构的边缘。在这里，我们通过数值模拟研究了三角形的无定形Yig（$ y_3fe_5o_ {12} $）微米大小的铁磁体作为角度孔径的函数。边缘旋转波（ESW）已在拐角处的三角形侧面传播，固定厚度为85 nm。优化了诸如上顶点角（在40 $^\ Circ $ -75 $ -75 $ -75 $ -75 $ -75 $ -75 $ -75 $ -75 $^\ CIRCE）之类的参数已进行了优化，以便在三角顶点上获得更高的ESW传输系数。我们观察到，在某个孔径角度，主导的ESW频率与局部DW模式相吻合，将传输最大化在1附近，并且相位移位降至$π/2 $，表明ESW通过上角具有共振传输。我们将获得的结果与现有的理论模型进行了比较。这些结果可能有助于开发自旋波计算的新基本元素。
Spin waves (SWs), being usually reflected by domain walls, could also be channeled along them. Edge domain walls yield the interesting, and potentially applicable to real devices property of broadband spin waves confinement to the edges of the structure. Here we investigate through numerical simulations the propagation of quasi one-dimensional spin waves in triangle-shaped amorphous YIG ($Y_3Fe_5O_{12}$) micron sized ferromagnets as a function of the angle aperture. The edge spin waves (ESWs) have been propagated over the corner in triangles of 2 microns side with a fixed thickness of 85 nm. Parameters such as superior vertex angle (in the range of 40$^\circ$-75$^\circ$) and applied magnetic field have been optimized in order to obtain a higher transmission coefficient of the ESWs over the triangle vertex. We observed that for a certain aperture angle for which dominated ESW frequency coincides with one of the localised DW modes, the transmission is maximized near one and the phase shift drops to $π/2$ indicating resonant transmission of ESWs through the upper corner. We compare the obtained results with existing theoretical models. These results could contribute to the development of novel basic elements for spin wave computing.
