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Optimum excitation wavelength and photon energy threshold for spintronic terahertz emission from Fe/Pt bilayer
https://oist.repo.nii.ac.jp/records/2736
https://oist.repo.nii.ac.jp/records/2736777a3867-4151-4691-91d5-5ddc402c4bd2
名前 / ファイル | ライセンス | アクション |
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1-s2 (1)0-S2589004222008872-mainvor (2.0 MB)
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CC BY 4.0
Creative Commons Attribution 4.0 International (https://creativecommons.org/licenses/by/4.0/) |
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-08-04 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Optimum excitation wavelength and photon energy threshold for spintronic terahertz emission from Fe/Pt bilayer | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者(英) |
Mag-usara, Valynn Katrine
× Mag-usara, Valynn Katrine× Escaño, Mary Clare× Petoukhoff, Christopher E.× Torosyan, Garik× Scheuer, Laura× Madéo, Julien× Afalla, Jessica× Talara, Miezel L.× Muldera, Joselito E.× Kitahara, Hideaki× Bacon, David R.× Nakajima, Makoto× Dani, Keshav× Papaioannou, Evangelos Th.× Beigang, René× Tani, Masahiko |
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書誌情報 |
en : iScience 巻 25, 号 7, p. 104615, 発行日 2022-07-15 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 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 <0.5 eV) suggests a ∼0.35-eV threshold pump photon energy for effective spintronic terahertz emission. The inferred threshold is supported by previous theoretical results on the onset energy of significant spin-filtering at the Fe-Pt interface, and confirmed by Fe/Pt electronic structure calculations in this present work. The results of terahertz time-domain emission spectroscopy show the sensitivity of spintronic terahertz emission to both the optical absorptance of the heterostructure and the energy-dependent spin transport, as dictated by the properties of the metallic thin films. | |||||
出版者 | ||||||
出版者 | Cell Press | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2589-0042 | |||||
PubMed番号 | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | PMID | |||||
関連識別子 | info:pmid/35800756 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1016/j.isci.2022.104615 | |||||
権利 | ||||||
権利情報 | © 2022 The Author(s). | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://www.sciencedirect.com/science/article/pii/S2589004222008872 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |