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首页> 外文期刊>Physical review >Off-axial focusing of a spin-wave lens in the presence of Dzyaloshinskii-Moriya interaction
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Off-axial focusing of a spin-wave lens in the presence of Dzyaloshinskii-Moriya interaction

机译：在Dzyaloshinskii-Moriya相互作用存在下旋转波镜头的轴向聚焦

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摘要

We theoretically study the effect of Dzyaloshinskii-Moriya interaction on the focusing of a spin-wave lens that is constructed by a circular interface between two magnetic films. We analytically derive the generalized Snell's law in the curved geometry and the position of the focal point which exhibits a peculiar off-axial focusing behavior. We uncover a strong dependence of the focal point on both the material parameters and the frequency of incident spin waves. Full micromagnetic simulations compare well with theoretical predictions. Our findings would be helpful to manipulate spin waves in chiral magnets and to design functional magnonic devices.
机译：理论上，从理论上研究了Dzyaloshinskii-Moriya相互作用对由两个磁膜之间的圆形界面构成的旋转波透镜的聚焦的影响。我们在曲线几何形状中分析了广义的Snell定律，以及表现出特殊的脱轴聚焦行为的焦点的位置。我们揭示了焦点对物料参数和入射旋转波的频率的强烈依赖。完整的微磁性模拟与理论预测相比很好。我们的研究结果可以有助于操纵手性磁体中的旋转波，并设计功能磁力装置。

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  • 来源
    《Physical review》 |2020年第1期|014423.1-014423.6|共6页
  • 作者

    Weiwei Bao; Zhenyu Wang; Yunshan Cao; Peng Yan;

  • 作者单位

    School of Electronic Science and Engineering and State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu 610054 China;

    School of Electronic Science and Engineering and State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu 610054 China;

    School of Electronic Science and Engineering and State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu 610054 China;

    School of Electronic Science and Engineering and State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu 610054 China;

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