Linear and nonlinear spin-wave dynamics in ultralow-damping microstructured Co 2 FeAl Heusler waveguide

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

Research output: Contribution to journalArticlepeer-review

Abstract

We report on the investigation of linear and nonlinear spin-wave dynamics of a microstructured Co 2 FeAl 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.

Original languageEnglish (US)
Article number232404
JournalApplied Physics Letters
Volume113
Issue number23
DOIs
StatePublished - Dec 3 2018
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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