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

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.

Mots clés

Magnetic properties and materials Magneto-optics Optical spectroscopy Spintronics Structural properties Surfaces interfaces and thin films Terahertz optics TMDC Ultrafast lasers

Domaines

Physique [physics]

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materials-14-06479-v3 (2).pdf (1.9 Mo)

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https://hal.science/hal-03542156

Soumis le : vendredi 4 mars 2022-12:14:02

Dernière modification le : mardi 4 juin 2024-13:26:03

Archivage à long terme le : dimanche 5 juin 2022-19:02:32

Dates et versions

hal-03542156 , version 1 (04-03-2022)

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Paternité

Identifiants

HAL Id : hal-03542156 , version 1
DOI : 10.3390/ma14216479
PUBMEDCENTRAL : PMC8585334
WOS : 000720009900001

Citer

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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