Increasing the Efficiency of a Spintronic THz Emitter Based on WSe(2)/FeCo

We report an increase in terahertz (THz) radiation efficiency due to FeCo/WSe(2) structures in the reflection geometry. This can be attributed to an absorption increase in the alloy FeCo layer at the input FeCo/WSe(2) interface due to constructive interference, as well as to the backward transport o...

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Autores principales: Khusyainov, Dinar, Guskov, Andrey, Ovcharenko, Sergei, Tiercelin, Nicolas, Preobrazhensky, Vladimir, Buryakov, Arseniy, Sigov, Alexander, Mishina, Elena
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8585334/
https://www.ncbi.nlm.nih.gov/pubmed/34772004
http://dx.doi.org/10.3390/ma14216479
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author Khusyainov, Dinar
Guskov, Andrey
Ovcharenko, Sergei
Tiercelin, Nicolas
Preobrazhensky, Vladimir
Buryakov, Arseniy
Sigov, Alexander
Mishina, Elena
author_facet Khusyainov, Dinar
Guskov, Andrey
Ovcharenko, Sergei
Tiercelin, Nicolas
Preobrazhensky, Vladimir
Buryakov, Arseniy
Sigov, Alexander
Mishina, Elena
author_sort Khusyainov, Dinar
collection PubMed
description We report an increase in terahertz (THz) radiation efficiency due to FeCo/WSe(2) structures in the reflection geometry. This can be attributed to an absorption increase in the alloy FeCo layer at the input FeCo/WSe(2) interface due to constructive interference, as well as to the backward transport of hot carriers from FeCo to WSe(2). In contrast to the transmission geometry, the THz generation efficiency in the reflection is much less dependent on the magnetic layer thickness. Our results suggest a cheap and efficient way to improve the characteristics of THz spintronic emitters with the conservation of a full set of their important properties.
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spelling pubmed-85853342021-11-12 Increasing the Efficiency of a Spintronic THz Emitter Based on WSe(2)/FeCo Khusyainov, Dinar Guskov, Andrey Ovcharenko, Sergei Tiercelin, Nicolas Preobrazhensky, Vladimir Buryakov, Arseniy Sigov, Alexander Mishina, Elena Materials (Basel) Article We report an increase in terahertz (THz) radiation efficiency due to FeCo/WSe(2) structures in the reflection geometry. This can be attributed to an absorption increase in the alloy FeCo layer at the input FeCo/WSe(2) interface due to constructive interference, as well as to the backward transport of hot carriers from FeCo to WSe(2). In contrast to the transmission geometry, the THz generation efficiency in the reflection is much less dependent on the magnetic layer thickness. Our results suggest a cheap and efficient way to improve the characteristics of THz spintronic emitters with the conservation of a full set of their important properties. MDPI 2021-10-28 /pmc/articles/PMC8585334/ /pubmed/34772004 http://dx.doi.org/10.3390/ma14216479 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Khusyainov, Dinar
Guskov, Andrey
Ovcharenko, Sergei
Tiercelin, Nicolas
Preobrazhensky, Vladimir
Buryakov, Arseniy
Sigov, Alexander
Mishina, Elena
Increasing the Efficiency of a Spintronic THz Emitter Based on WSe(2)/FeCo
title Increasing the Efficiency of a Spintronic THz Emitter Based on WSe(2)/FeCo
title_full Increasing the Efficiency of a Spintronic THz Emitter Based on WSe(2)/FeCo
title_fullStr Increasing the Efficiency of a Spintronic THz Emitter Based on WSe(2)/FeCo
title_full_unstemmed Increasing the Efficiency of a Spintronic THz Emitter Based on WSe(2)/FeCo
title_short Increasing the Efficiency of a Spintronic THz Emitter Based on WSe(2)/FeCo
title_sort increasing the efficiency of a spintronic thz emitter based on wse(2)/feco
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8585334/
https://www.ncbi.nlm.nih.gov/pubmed/34772004
http://dx.doi.org/10.3390/ma14216479
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