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Fizika Tverdogo Tela, 2021, Volume 63, Issue 9, Pages 1284–1289
DOI: https://doi.org/10.21883/FTT.2021.09.51254.16H
(Mi ftt8031)
 

XXV International Symposium Nanophysics and Nanoelectronics, Nizhny Novgorod, March 9-12, 2021
Magnetism

Optimization of the parameters of a ferromagnet/tunnel barrier/noncollinear ferromagnet system for the generation of electromagnetic radiation

E. A. Karashtinab

a Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhny Novgorod, Russia
b National Research Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
Abstract: The possibility of generating electromagnetic radiation during the transition of conduction electrons between the spin subbands of a noncollinear ferromagnet in the ferromagnet /tunnel barrier/ noncollinear ferromagnet system is investigated. In such a system, a nonequilibrium spin is injected into a noncollinear ferromagnet by an electric current which is spin-polarized due to the first homogeneous ferromagnet. It is shown that it is possible to achieve a significant decrease in the critical current of wave generation in the case when both ferromagnets are “bad” metals or semiconductors in comparison with the case when ferromagnets are “good” metals. The estimates obtained for the critical current are experimentally realizable. It is possible to control the frequency of the electromagnetic wave emitted by the system by manipulating the voltage applied to it.
Keywords: noncollinear ferromagnet, exchange interaction, spin–orbital interaction, tunneling magnetic contact.
Funding agency Grant number
Russian Science Foundation 19-72-00130
This work was supported by the Russian Scientific Foundation, project no. 19-72-00130.
Received: 09.04.2021
Revised: 09.04.2021
Accepted: 19.04.2021
English version:
Physics of the Solid State, 2021, Volume 63, Issue 9, Pages 1397–1402
DOI: https://doi.org/10.1134/S1063783421090146
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: E. A. Karashtin, “Optimization of the parameters of a ferromagnet/tunnel barrier/noncollinear ferromagnet system for the generation of electromagnetic radiation”, Fizika Tverdogo Tela, 63:9 (2021), 1284–1289; Phys. Solid State, 63:9 (2021), 1397–1402
Citation in format AMSBIB
\Bibitem{Kar21}
\by E.~A.~Karashtin
\paper Optimization of the parameters of a ferromagnet/tunnel barrier/noncollinear ferromagnet system for the generation of electromagnetic radiation
\jour Fizika Tverdogo Tela
\yr 2021
\vol 63
\issue 9
\pages 1284--1289
\mathnet{http://mi.mathnet.ru/ftt8031}
\crossref{https://doi.org/10.21883/FTT.2021.09.51254.16H}
\elib{https://elibrary.ru/item.asp?id=46690892}
\transl
\jour Phys. Solid State
\yr 2021
\vol 63
\issue 9
\pages 1397--1402
\crossref{https://doi.org/10.1134/S1063783421090146}
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