Increasing the efficiency of a spintronic thz emitter based on wse2/feco - Archive ouverte HAL
Journal Articles Materials Year : 2021

Increasing the efficiency of a spintronic thz emitter based on wse2/feco

Abstract

We report an increase in terahertz (THz) radiation efficiency due to FeCo/WSe2 structures in the reflection geometry. This can be attributed to an absorption increase in the alloy FeCo layer at the input FeCo/WSe2 interface due to constructive interference, as well as to the backward transport of hot carriers from FeCo to WSe2 . 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. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
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hal-03542156 , version 1 (04-03-2022)

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Dinar Khusyainov, Andrey Guskov, Sergei Ovcharenko, Nicolas Tiercelin, Vladimir L. Preobrazhensky, et al.. Increasing the efficiency of a spintronic thz emitter based on wse2/feco. Materials, 2021, 14 (21), pp.6479. ⟨10.3390/ma14216479⟩. ⟨hal-03542156⟩
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