Experimental observation of the interlayer perpendicular standing spin wave mode with low damping in skyrmion-hosting [Pt/Co/Ta]10 multilayer

Zhendong Chen, Meiyang Ma, Senfu Zhang, Mangyuan Ma, Zizhao Pan, Xixiang Zhang, Xuezhong Ruan, Yongbing Xu, Fusheng Ma

Research output: Contribution to journalArticlepeer-review

Abstract

In this work, an interlayer perpendicular standing spin wave mode is observed in the skyrmion-hosting [Pt/Co/Ta]10 multilayer by time-resolved magneto-optical Kerr effect measurements. The observed interlayer mode depends on the interlayer spinpumping and spin transfer torque among the neighboring Co layers. This mode shows monotone increasing frequency-field dependence which is similar to the ferromagnetic resonance mode, but with higher frequency range. Besides, the damping of the interlayer mode is found to be a relatively low constant value of 0.027 which is independent of the external field. This work expound the potential application of the [heavy-metal/ferromagnetic-metal]n multilayers for skyrmion-based magnonic devices which can provide multiple magnon modes, relatively low damping, and skyrmion states, simultaneously.
Original languageEnglish (US)
JournalChinese Physics B
DOIs
StatePublished - Jun 27 2022

ASJC Scopus subject areas

  • General Physics and Astronomy

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