1 Jiangsu Key Laboratory of Opto-Electronic Technology, Center for Quantum Transport and Thermal Energy Science, School of Physics and Technology, Nanjing Normal University, Nanjing 210046, China; 2 Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China; 3 School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China; 4 Physical Science and Engineering Division(PSE), King Abdullah University of Science and Technology(KAUST), Thuwal 23955-6900, Saudi Arabia
Abstract An interlayer perpendicular standing spin wave mode is observed in the skyrmion-hosting [Pt/Co/Ta]10 multilayer by measuring the time-resolved magneto-optical Kerr effect. The observed interlayer mode depends on the interlayer spin-pumping and spin transfer torque among the neighboring Co layers. This mode shows monotonically increasing frequency-field dependence which is similar to the ferromagnetic resonance mode, but within 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 expounds the potential application of the [heavy-metal/ferromagnetic-metal]n multilayers to skyrmion-based magnonic devices which can provide multiple magnon modes, relatively low damping, and skyrmion states, simultaneously.
(Magnetic properties of interfaces (multilayers, superlattices, heterostructures))
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 12074189, 11704191, 11774160, and 61427812), the Natural Science Foundation of Jiangsu Province, China (Grant Nos. BK20192006 and BK20211144), and the Postdoctoral Research Funding Program of Jiangsu Province, China (Grant No. 2021K503C).
Corresponding Authors:
Xue-Zhong Ruan, Yong-Bing Xu, Fu-Sheng Ma
E-mail: xzruan@nju.edu.cn;ybxu@nju.edu.cn;phymafs@njnu.edu.cn
Cite this article:
Zhen-Dong Chen(陈振东), Mei-Yang Ma(马眉扬), Sen-Fu Zhang(张森富), Mang-Yuan Ma(马莽原), Zi-Zhao Pan(潘咨兆), Xi-Xiang Zhang(张西祥), Xue-Zhong Ruan(阮学忠), Yong-Bing Xu(徐永兵), and Fu-Sheng Ma(马付胜) Experimental observation of interlayer perpendicular standing spin wave mode with low damping in skyrmion-hosting [Pt/Co/Ta]10 multilayer 2022 Chin. Phys. B 31 117501
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