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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Modulation of magnonic bands of dipole-exchange spin waves in fishbone-like yttrium iron garnet nanostrip magnonic crystal waveguides
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Modulation of magnonic bands of dipole-exchange spin waves in fishbone-like yttrium iron garnet nanostrip magnonic crystal waveguides

机译:偶极交换旋转波在鱼骨钇铁石榴石纳米氧化物磁性波导中的致偶极交换旋转波的调节

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摘要

We designed a fishbone-like yttrium iron garnet nanostrip magnonic crystal waveguide structure and investigated the modulation of the structural parameters to the propagating characteristics of dipole-exchange spin waves by using the object oriented micromagnetic framework numerical calculation method. The number, position, and width of the allowed bands in the magnonic band maps can be manipulated by changing the tilted angles of the sides branch (), the width of the 'main bone' (W-1), and the separatiion distance between the two side branches (P-2). Besides the normal band gaps appearing at the Brillouin zone (BZ) boundaries, extra band gaps emerge at certain values of k in the dispersion curves with a deviation ? away from the BZ boundaries which can also be controlled by , W-1, and P-2. Compared with other parameters, the tilted angle has a greater impact on spin wave propagation.
机译:我们设计了一种像薯条铁石榴石纳米脂肪型千岁结构,并研究了通过使用面向对象的微磁框架数值计算方法对偶极交换自旋波的传播特性的调制。 可以通过改变侧面分支()的倾斜角度,“主骨头”(W-1)的宽度以及之间的分离距离来操纵磁带贴图中允许的频带的数量,位置和宽度 两个侧支分支(P-2)。 除了在布里渊区(BZ)边界出现的正常带隙外,额外的带间隙在分散曲线中的某些值中出现,具有偏差? 远离BZ边界,也可以由W-1和P-2控制。 与其他参数相比,倾斜的角度对自旋波传播产生了更大的影响。

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