We have developed spin-resolved resonant electron energy-loss spectroscopy with the primary energy of 0.3–1.5 keV, which corresponds to the core excitations of 2p–3d absorption of transition metals and 3d–4f absorption of rare-earths, with the energy resolution of about 100 meV using a spin-polarized electron source as a GaAs/GaAsP strained superlattice photocathode. Element- and spin-selective carrier and valence plasmons can be observed using the resonance enhancement of core absorptions and electron spin polarization. Furthermore, bulk-sensitive electron energy-loss spectroscopy spectra can be obtained because the primary energy corresponds to the mean free path of 1–10 nm. The methodology is expected to provide us with novel information about elementary excitations by resonant inelastic x-ray scattering and resonant photoelectron spectroscopy.
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September 2021
Research Article|
September 17 2021
Bulk-sensitive spin-resolved resonant electron energy-loss spectroscopy (SR-rEELS): Observation of element- and spin-selective bulk plasmons
Shin-ichi Kimura
;
Shin-ichi Kimura
a)
1
Graduate School of Frontier Biosciences, Osaka University
, Suita, Osaka 565-0871, Japan
2
Department of Physics, Graduate School of Science, Osaka University
, Toyonaka, Osaka 560-0043, Japan
3
Institute for Molecular Science
, Okazaki, Aichi 444-8585, Japan
a)Author to whom correspondence should be addressed: [email protected]
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Taishi Kawabata;
Taishi Kawabata
2
Department of Physics, Graduate School of Science, Osaka University
, Toyonaka, Osaka 560-0043, Japan
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Hiroki Matsumoto;
Hiroki Matsumoto
2
Department of Physics, Graduate School of Science, Osaka University
, Toyonaka, Osaka 560-0043, Japan
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Yu Ohta;
Yu Ohta
2
Department of Physics, Graduate School of Science, Osaka University
, Toyonaka, Osaka 560-0043, Japan
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Ayuki Yoshizumi;
Ayuki Yoshizumi
2
Department of Physics, Graduate School of Science, Osaka University
, Toyonaka, Osaka 560-0043, Japan
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Yuto Yoshida;
Yuto Yoshida
2
Department of Physics, Graduate School of Science, Osaka University
, Toyonaka, Osaka 560-0043, Japan
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Takumi Yamashita;
Takumi Yamashita
2
Department of Physics, Graduate School of Science, Osaka University
, Toyonaka, Osaka 560-0043, Japan
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Hiroshi Watanabe
;
Hiroshi Watanabe
1
Graduate School of Frontier Biosciences, Osaka University
, Suita, Osaka 565-0871, Japan
2
Department of Physics, Graduate School of Science, Osaka University
, Toyonaka, Osaka 560-0043, Japan
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Yoshiyuki Ohtsubo
;
Yoshiyuki Ohtsubo
1
Graduate School of Frontier Biosciences, Osaka University
, Suita, Osaka 565-0871, Japan
2
Department of Physics, Graduate School of Science, Osaka University
, Toyonaka, Osaka 560-0043, Japan
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Naoto Yamamoto
;
Naoto Yamamoto
4
High Energy Accelerator Research Organization (KEK)
, Tsukuba, Ibaraki 305-0801, Japan
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Xiuguang Jin
Xiuguang Jin
4
High Energy Accelerator Research Organization (KEK)
, Tsukuba, Ibaraki 305-0801, Japan
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a)Author to whom correspondence should be addressed: [email protected]
Rev. Sci. Instrum. 92, 093103 (2021)
Article history
Received:
April 29 2021
Accepted:
September 05 2021
Citation
Shin-ichi Kimura, Taishi Kawabata, Hiroki Matsumoto, Yu Ohta, Ayuki Yoshizumi, Yuto Yoshida, Takumi Yamashita, Hiroshi Watanabe, Yoshiyuki Ohtsubo, Naoto Yamamoto, Xiuguang Jin; Bulk-sensitive spin-resolved resonant electron energy-loss spectroscopy (SR-rEELS): Observation of element- and spin-selective bulk plasmons. Rev. Sci. Instrum. 1 September 2021; 92 (9): 093103. https://doi.org/10.1063/5.0055435
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