We report on the experimental observation of short, exchange-dominated spin waves (EDSW) generation by a thickness step in the ferrite waveguide under microwave pumping. This effect was explored both experimentally (using mirco-Brillouin light scattering technique) and theoretically (by micromagnetic simulation) for the sample magnetized along the step and for two cases of pumping: a uniform microwave pumping of the step and its pumping through a magnetostatic surface wave (MSSW) traveling across the step. It was shown that efficiency of EDSW generation caused by MSSW scattering on the thickness step increases with the frequency (or wave number) while for the case of the uniform pumping, the generation efficiency demonstrates the opposite behavior.
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8 September 2020
Research Article|
September 11 2020
Spin-waves generation at the thickness step of yttrium iron garnet film
S. L. Vysotskii
;
S. L. Vysotskii
a)
1
Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences
, Saratov Branch 410019, Russia
2
Saratov State University
, Saratov 410012, Russia
a)Author to whom correspondence should be addressed: [email protected]
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A. V. Sadovnikov
;
A. V. Sadovnikov
2
Saratov State University
, Saratov 410012, Russia
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G. M. Dudko
;
G. M. Dudko
1
Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences
, Saratov Branch 410019, Russia
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A. V. Kozhevnikov
;
A. V. Kozhevnikov
1
Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences
, Saratov Branch 410019, Russia
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Y. V. Khivintsev
;
Y. V. Khivintsev
1
Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences
, Saratov Branch 410019, Russia
2
Saratov State University
, Saratov 410012, Russia
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V. K. Sakharov
;
V. K. Sakharov
1
Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences
, Saratov Branch 410019, Russia
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N. N. Novitskii
;
N. N. Novitskii
3
National Academy of Sciences of Belarus, Scientific-Practical Materials Research Center
, Minsk 220072, Belarus
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A. I. Stognij
;
A. I. Stognij
3
National Academy of Sciences of Belarus, Scientific-Practical Materials Research Center
, Minsk 220072, Belarus
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Y. A. Filimonov
Y. A. Filimonov
1
Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences
, Saratov Branch 410019, Russia
2
Saratov State University
, Saratov 410012, Russia
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a)Author to whom correspondence should be addressed: [email protected]
Appl. Phys. Lett. 117, 102403 (2020)
Article history
Received:
June 16 2020
Accepted:
August 23 2020
Citation
S. L. Vysotskii, A. V. Sadovnikov, G. M. Dudko, A. V. Kozhevnikov, Y. V. Khivintsev, V. K. Sakharov, N. N. Novitskii, A. I. Stognij, Y. A. Filimonov; Spin-waves generation at the thickness step of yttrium iron garnet film. Appl. Phys. Lett. 8 September 2020; 117 (10): 102403. https://doi.org/10.1063/5.0018388
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