Spin pumping in YIG-Pt structures: the role of the van Hove singularities
Y.V. Nikulin, Y.V. Khivintsev, M.E. Seleznev, S.L. Vysotskii, A.V., Kozhevnikov, Y.V. Nikulin, Y.V. Khivintsev, M.E. Seleznev, S.L. Vysotskii,, A.V. Kozhevnikov, V.K. Sakharov, G.M. Dudko, A. Khitun, S.A. Nikitov, and, Y.A. Filimonov
TL;DR
This paper investigates how van Hove singularities in the spin wave spectrum of YIG/Pt structures enhance spin pumping efficiency, providing insights for spintronic device development.
Contribution
It demonstrates the role of van Hove singularities in increasing spin current generation in YIG/Pt structures, combining experimental analysis with spectral considerations.
Findings
Enhanced spin pumping efficiency at van Hove singularities
Correlation between density of states and spin current generation
Implications for spin wave-based spintronic devices
Abstract
Spin pumping by surface and backward volume magnetostatic waves in YIG/Pt structures is experimentally studied and analyzed. It is shown that at frequencies corresponding to van Hove singularities in the density of states of the spin wave spectrum, an increase in the efficiency of electron-magnon scattering and spin current generation takes place. The obtained results are important for spin wave-based spintronic devices development.
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Taxonomy
TopicsMagneto-Optical Properties and Applications · Magnetic properties of thin films · Magnetic Properties and Applications