Linear and nonlinear spin-wave dynamics in ultralow-damping microstructured Co2FeAl Heusler waveguide

Wang, Sheng; Ding, Junjia; Guan, Xiawei; Jungfleisch, Matthias B.; Zhang, Zhizhi; Wang, Xiaojie; Gu, Wei; Zhu, Yunlai; Pearson, John E.; Cheng, Xiaomin; Hoffmann, Axel; Miao, Xiangshui

doi:10.1063/1.5038836

Title: Linear and nonlinear spin-wave dynamics in ultralow-damping microstructured Co₂FeAl Heusler waveguide

Journal Article · 03 December 2018 · Applied Physics Letters

DOI: https://doi.org/10.1063/1.5038836 · OSTI ID:1492839

^[1];

^[2]; Guan, Xiawei ^[3]; Jungfleisch, Matthias B. ^[4]; Zhang, Zhizhi ^[1]; Wang, Xiaojie ^[3]; Gu, Wei ^[3]; Zhu, Yunlai ^[3]; Pearson, John E. ^[2];

^[3];

^[2]; Miao, Xiangshui ^[3]

Huazhong Univ. of Science and Technology, Wuhan (China); Argonne National Lab. (ANL), Lemont, IL (United States)
Argonne National Lab. (ANL), Lemont, IL (United States)
Huazhong Univ. of Science and Technology, Wuhan (China)
Univ. of Delaware, Newark, DE (United States)

Here, 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.

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Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Organization:: National Natural Science Foundation of China (NSFC); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1492839

Journal Information:: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 23 Vol. 113; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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