Influence of three-magnon decays on electromotive force generation by magnetostatic surface waves in integral YIG – Pt structures

IF 0.5 Q4 PHYSICS, MULTIDISCIPLINARY

Izvestiya Vysshikh Uchebnykh Zavedeniy-Prikladnaya Nelineynaya Dinamika Pub Date : 2022-09-30 DOI:10.18500/0869-6632-003008

M. Seleznev, Y. Nikulin, Y. Khivintsev, S. Vysotskii, A. Kozhevnikov, V. Sakharov, G. Dudko, Evgenij Pavlov, Y. Filimonov

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引用次数: 1

Abstract

The purpose of this work is to find out the influence of three-magnon decay processes on the electromotive force (EMF (U)) generated by propagating magnetostatic surface waves (MSSW) with the help of the inverse spin Hall effect in the “yttrium-iron garnet (YIG) – platinum (Pt)” structure. Methods. The experiments were carried out using the delay line structures based on YIG films with the thickness of 8.8 and 14.6 µm, on the surface of which antennas were formed for MSSWs excitation and reception and a Pt film between antennas. Results. It was shown that the three-magnon parametric instability can significantly change the character of EMF dependences on frequency and on power of MSSW that resulted both from the effect of power limitation and from the participation of parametric spin waves (PSW) and secondary spin waves (SSW) in the processes of electron-magnon scattering on the YIG/Pt border. Conclusion. It was demonstrated that the effect of amplification of EMF generation at the frequencies that are close to the long-wavelength border of the MSSW spectrum is related with the PSW and SSW population of the region of anisotropic dipole-exchange spin waves spectrum, which is characterized by the presence of singularities in the magnon density of states (Van Hove singularities).

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三磁振子衰减对整体YIG - Pt结构中静磁表面波产生电动势的影响

本研究的目的是在“钇-铁石榴石(YIG) -铂(Pt)”结构中，利用逆自旋霍尔效应研究三磁子衰变过程对传播静磁表面波(MSSW)产生的电动势(EMF (U))的影响。方法。实验采用厚度分别为8.8µm和14.6µm的YIG薄膜作为延迟线结构，在延迟线表面形成用于mssw激励和接收的天线，并在天线之间形成Pt薄膜。结果。结果表明，三磁振子参数不稳定性可以显著改变电动势对频率和功率的依赖特性，这是由于功率限制的影响以及参数自旋波(PSW)和二次自旋波(SSW)参与了YIG/Pt边界上的电子-磁振子散射过程。结论。结果表明，在接近MSSW谱长波长边界的频率处，电磁场产生的放大效应与各向异性偶极交换自旋波谱区域的PSW和SSW居数有关，其特征是磁振子密度存在奇点(Van Hove奇点)。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Izvestiya Vysshikh Uchebnykh Zavedeniy-Prikladnaya Nelineynaya Dinamika PHYSICS, MULTIDISCIPLINARY-

CiteScore

1.20

自引率

25.00%

发文量

期刊介绍： Scientific and technical journal Izvestiya VUZ. Applied Nonlinear Dynamics is an original interdisciplinary publication of wide focus. The journal is included in the List of periodic scientific and technical publications of the Russian Federation, recommended for doctoral thesis publications of State Commission for Academic Degrees and Titles at the Ministry of Education and Science of the Russian Federation, indexed by Scopus, RSCI. The journal is published in Russian (English articles are also acceptable, with the possibility of publishing selected articles in other languages by agreement with the editors), the articles data as well as abstracts, keywords and references are consistently translated into English. First and foremost the journal publishes original research in the following areas: -Nonlinear Waves. Solitons. Autowaves. Self-Organization. -Bifurcation in Dynamical Systems. Deterministic Chaos. Quantum Chaos. -Applied Problems of Nonlinear Oscillation and Wave Theory. -Modeling of Global Processes. Nonlinear Dynamics and Humanities. -Innovations in Applied Physics. -Nonlinear Dynamics and Neuroscience. All articles are consistently sent for independent, anonymous peer review by leading experts in the relevant fields, the decision to publish is made by the Editorial Board and is based on the review. In complicated and disputable cases it is possible to review the manuscript twice or three times. The journal publishes review papers, educational papers, related to the history of science and technology articles in the following sections: -Reviews of Actual Problems of Nonlinear Dynamics. -Science for Education. Methodical Papers. -History of Nonlinear Dynamics. Personalia.