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Frequency dependence of the spin mixing conductance of YIG|Pt structures upon MSSW spin pumping
Russian version
DOI: 10.21883/PSS.2023.06.56103.10H
Nikulin Yu. V.1,2, Vysotsky S. L.1,2, Seleznev M. E.1, Kozhevnikov A.V.1, Sakharov V. K.1,2, Dudko G. M.1, Khivintsev Yu. V.1,2, Filimonov Y. A.1,2,3
1Saratov Branch, Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Saratov, Russia
2Saratov State University, Saratov, Russia
3Yuri Gagarin State Technical University of Saratov, Saratov, Russia
Email: yuri.a.filimonov@gmail.com
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Spin pumping by traveling magnetostatic surface waves (MSSW) has been experimentally investigated in YIG|Pt structures made on the basis of 0.9, 4, 8, 14 and 18 μm thick YIG epitaxial films. It is found that at frequencies corresponding to the van Hove singularities in the density of states of the MSSW spectrum of the structure, the EMF value generated due to the inverse spin Hall effect increases. This increase is associated with an increase in the spin mixing conductance of the YIG|Pt interface due to an increase in the efficiency of electron-magnon scattering at the frequencies of van Hove singularities in the spin wave spectrum. Keywords: spintronics, spin transport, spin waves, magnon density of states.
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