Optimum excitation wavelength and photon energy threshold for spintronic terahertz emission from Fe/Pt bilayer

Valynn Katrine Mag-Usara; Mary Clare Escaño; Christopher Petoukhoff; Garik Torosyan; Laura Scheuer; Julien Madéo; Jessica Afalla; Miezel L Talara; Joselito E Muldera; Hideaki Kitahara; David R Bacon; Makoto Nakajima; Keshav Dani; Evangelos Th Papaioannou; René Beigang; Masahiko Tani

doi:10.1016/j.isci.2022.104615

Optimum excitation wavelength and photon energy threshold for spintronic terahertz emission from Fe/Pt bilayer

Valynn Katrine Mag-Usara, Mary Clare Escaño, Christopher Petoukhoff, Garik Torosyan, Laura Scheuer, Julien Madéo, Jessica Afalla, Miezel L Talara, Joselito E Muldera, Hideaki Kitahara, David R Bacon, Makoto Nakajima, Keshav Dani, Evangelos Th Papaioannou, René Beigang, Masahiko Tani

Physical Sciences and Engineering

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

Terahertz emission from ferromagnetic/non-magnetic spintronic heterostructures had been demonstrated as pump wavelength-independent. We report, however, the pump wavelength dependence of terahertz emission from an optimized Fe/Pt spintronic bilayer on MgO substrate. Maximum terahertz generation per total pump power was observed in the 1200- to 1800-nm pump wavelength range, and a marked decrease in the terahertz emission efficiency beyond 2500 nm (pump photon energies

Original language	English (US)
Pages (from-to)	104615
Journal	iScience
Volume	25
Issue number	7
DOIs	https://doi.org/10.1016/j.isci.2022.104615
State	Published - Jun 29 2022

Bibliographical note

KAUST Repository Item: Exported on 2022-12-12
Acknowledgements: This work was in part funded by the Femtosecond Spectroscopy Unit, Okinawa Institute of Science and Technology Graduate University, and also partly supported by JKA Foundation and its promotion funds from AUTORACE, as well as grants from SEI Group CSR Foundation, Samco Science and Technology Foundation, and Izumi Science and Technology Foundation. M.C. Escaño extends gratitude to CII, University of Fukui for the use of the ACCMS Supercomputer of Kyoto University and Japan Society for the Promotion of Science KAKENHI Grant 22K04924.

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10.1016/j.isci.2022.104615

https://repository.kaust.edu.sa/bitstream/10754/679713/1/1-s2.0-S2589004222008872-main.pdf

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Mag-Usara, V. K., Escaño, M. C., Petoukhoff, C., Torosyan, G., Scheuer, L., Madéo, J., Afalla, J., Talara, M. L., Muldera, J. E., Kitahara, H., Bacon, D. R., Nakajima, M., Dani, K., Papaioannou, E. T., Beigang, R., & Tani, M. (2022). Optimum excitation wavelength and photon energy threshold for spintronic terahertz emission from Fe/Pt bilayer. iScience, 25(7), 104615. https://doi.org/10.1016/j.isci.2022.104615

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title = "Optimum excitation wavelength and photon energy threshold for spintronic terahertz emission from Fe/Pt bilayer",

abstract = "Terahertz emission from ferromagnetic/non-magnetic spintronic heterostructures had been demonstrated as pump wavelength-independent. We report, however, the pump wavelength dependence of terahertz emission from an optimized Fe/Pt spintronic bilayer on MgO substrate. Maximum terahertz generation per total pump power was observed in the 1200- to 1800-nm pump wavelength range, and a marked decrease in the terahertz emission efficiency beyond 2500 nm (pump photon energies",

author = "Mag-Usara, {Valynn Katrine} and Esca{\~n}o, {Mary Clare} and Christopher Petoukhoff and Garik Torosyan and Laura Scheuer and Julien Mad{\'e}o and Jessica Afalla and Talara, {Miezel L} and Muldera, {Joselito E} and Hideaki Kitahara and Bacon, {David R} and Makoto Nakajima and Keshav Dani and Papaioannou, {Evangelos Th} and Ren{\'e} Beigang and Masahiko Tani",

note = "KAUST Repository Item: Exported on 2022-12-12 Acknowledgements: This work was in part funded by the Femtosecond Spectroscopy Unit, Okinawa Institute of Science and Technology Graduate University, and also partly supported by JKA Foundation and its promotion funds from AUTORACE, as well as grants from SEI Group CSR Foundation, Samco Science and Technology Foundation, and Izumi Science and Technology Foundation. M.C. Esca{\~n}o extends gratitude to CII, University of Fukui for the use of the ACCMS Supercomputer of Kyoto University and Japan Society for the Promotion of Science KAKENHI Grant 22K04924.",

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Mag-Usara, VK, Escaño, MC, Petoukhoff, C, Torosyan, G, Scheuer, L, Madéo, J, Afalla, J, Talara, ML, Muldera, JE, Kitahara, H, Bacon, DR, Nakajima, M, Dani, K, Papaioannou, ET, Beigang, R & Tani, M 2022, 'Optimum excitation wavelength and photon energy threshold for spintronic terahertz emission from Fe/Pt bilayer', iScience, vol. 25, no. 7, pp. 104615. https://doi.org/10.1016/j.isci.2022.104615

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T1 - Optimum excitation wavelength and photon energy threshold for spintronic terahertz emission from Fe/Pt bilayer

AU - Mag-Usara, Valynn Katrine

AU - Escaño, Mary Clare

AU - Petoukhoff, Christopher

AU - Torosyan, Garik

AU - Scheuer, Laura

AU - Madéo, Julien

AU - Afalla, Jessica

AU - Talara, Miezel L

AU - Muldera, Joselito E

AU - Kitahara, Hideaki

AU - Bacon, David R

AU - Nakajima, Makoto

AU - Dani, Keshav

AU - Papaioannou, Evangelos Th

AU - Beigang, René

AU - Tani, Masahiko

N1 - KAUST Repository Item: Exported on 2022-12-12 Acknowledgements: This work was in part funded by the Femtosecond Spectroscopy Unit, Okinawa Institute of Science and Technology Graduate University, and also partly supported by JKA Foundation and its promotion funds from AUTORACE, as well as grants from SEI Group CSR Foundation, Samco Science and Technology Foundation, and Izumi Science and Technology Foundation. M.C. Escaño extends gratitude to CII, University of Fukui for the use of the ACCMS Supercomputer of Kyoto University and Japan Society for the Promotion of Science KAKENHI Grant 22K04924.

PY - 2022/6/29

Y1 - 2022/6/29

N2 - Terahertz emission from ferromagnetic/non-magnetic spintronic heterostructures had been demonstrated as pump wavelength-independent. We report, however, the pump wavelength dependence of terahertz emission from an optimized Fe/Pt spintronic bilayer on MgO substrate. Maximum terahertz generation per total pump power was observed in the 1200- to 1800-nm pump wavelength range, and a marked decrease in the terahertz emission efficiency beyond 2500 nm (pump photon energies

AB - Terahertz emission from ferromagnetic/non-magnetic spintronic heterostructures had been demonstrated as pump wavelength-independent. We report, however, the pump wavelength dependence of terahertz emission from an optimized Fe/Pt spintronic bilayer on MgO substrate. Maximum terahertz generation per total pump power was observed in the 1200- to 1800-nm pump wavelength range, and a marked decrease in the terahertz emission efficiency beyond 2500 nm (pump photon energies

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SP - 104615

JO - iScience

JF - iScience

IS - 7

ER -

Optimum excitation wavelength and photon energy threshold for spintronic terahertz emission from Fe/Pt bilayer

Abstract

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