Linear and nonlinear spin-wave dynamics in ultralow-damping microstructured Co2FeAl Heusler waveguide
Linear and nonlinear spin-wave dynamics in ultralow-damping microstructured Co2FeAl Heusler waveguide
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DOI：
10.1063/1.5038836
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发表时间：
2018-12
影响因子：
4
通讯作者：
Sheng Wang;J. Ding;X. Guan;M. Jungfleisch;Zhizhi Zhang;Xiaojie Wang;Wei Gu;Yunlai Zhu;J. Pearson;Xiaomin Cheng;A. Hoffmann;X. Miao
中科院分区：
文献类型：
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作者：
Sheng Wang;J. Ding;X. Guan;M. Jungfleisch;Zhizhi Zhang;Xiaojie Wang;Wei Gu;Yunlai Zhu;J. Pearson;Xiaomin Cheng;A. Hoffmann;X. Miao
本文报道了利用微聚焦布里渊光散射技术研究微结构Co_2FeAl Heusler波导的线性和非线性自旋波动力学。由于吉尔伯特阻尼的减小，在线性区域中传播的波的衰减长度显著增加到19.55 μm。此外，退磁场引起的局部边缘模导致在高功率下在两倍和三倍激励频率处的高次谐波的非线性产生。所得到的结果提供了宝贵的见解的线性和非线性的自旋波动力学的Heusler波导和可能被应用在实现自旋波倍频magnonic应用程序，我们报告的线性和非线性自旋波动力学的微结构Co2FeAl Heusler波导的微焦点布里渊光散射技术的调查。由于吉尔伯特阻尼的减小，在线性区域中传播的波的衰减长度显著增加到19.55 μm。此外，退磁场引起的局部边缘模导致在高功率下在两倍和三倍激励频率处的高次谐波的非线性产生。所得结果提供了有价值的见解的线性和非线性的自旋波动力学的Heusler波导，并可能被应用在实施自旋波倍频磁振子应用。
We report on the investigation of linear and nonlinear spin-wave dynamics of a microstructured Co2FeAl Heusler waveguide using the microfocus Brillouin light scattering technique. A significantly increased decay length of 19.55 μm owing to decreased Gilbert damping has been observed for waves propagating in the linear regime. Furthermore, the localized edge mode caused by the demagnetizing field leads to the nonlinear generation of high-order harmonics at double and triple excitation frequencies at high powers. The obtained results provide valuable insights into the linear and nonlinear spin wave dynamics of the Heusler waveguide and could potentially be applied in the implementation of spin wave frequency multipliers for magnonic applications.We report on the investigation of linear and nonlinear spin-wave dynamics of a microstructured Co2FeAl Heusler waveguide using the microfocus Brillouin light scattering technique. A significantly increased decay length of 19.55 μm owing to decreased Gilbert damping has been observed for waves propagating in the linear regime. Furthermore, the localized edge mode caused by the demagnetizing field leads to the nonlinear generation of high-order harmonics at double and triple excitation frequencies at high powers. The obtained results provide valuable insights into the linear and nonlinear spin wave dynamics of the Heusler waveguide and could potentially be applied in the implementation of spin wave frequency multipliers for magnonic applications.