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  Development of hard X-ray photoelectron SPLEED-based spectrometer applicable for probing of buried magnetic layer valence states

Kozina, X., Ikenaga, E., Viol Barbosa, C. E., Ouardi, S., Karel, J., Yamamoto, M., et al. (2016). Development of hard X-ray photoelectron SPLEED-based spectrometer applicable for probing of buried magnetic layer valence states. Journal of Electron Spectroscopy and Related Phenomena, 211, 12-18. doi:10.1016/j.elspec.2016.05.001.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-96EC-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-F7F1-5
Genre: Journal Article

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Kozina, Xeniya1, Author
Ikenaga, Eiji1, Author
Viol Barbosa, Carlos Eduardo2, Author              
Ouardi, Siham3, Author              
Karel, Julie4, Author              
Yamamoto, Masafumi1, Author
Kobayashi, Keisuke1, Author
Elmers, Hans Joachim1, Author
Schoenhense, Gerd1, Author
Felser, Claudia5, Author              
Affiliations:
1External Organizations, ou_persistent22              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
3Siham Ouardi, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863439              
4Julie Karel, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863434              
5Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: A novel design of high-voltage compatible polarimeter for spin-resolved hard X-ray photoelectron spectroscopy (Spin-HAXPES) went into operation at beamline BL09XU of SPring-8 in Hyogo, Japan. The detector is based on the well-established principle of electron diffraction from a W(001) single-crystal at a scattering energy of 103.5 eV. It's special feature is that it can be operated at a high-negative bias potential up to 10 kV, necessary to access the HAXPES range. The polarimeter is operated behind a large hemispherical analyzer (Scienta R-4000). It was optimized for high transmission of the transfer optics. A delay-line detector (20 mm dia.) is positioned at the exit plane of the analyzer enabling conventional multichannel intensity spectroscopy simultaneously with single-channel spin analysis. The performance of the combined setup is demonstrated by the spin-resolved data for the valence-region of a FeCo functional layer of a tunneling device, buried beneath 3 nm of oxidic material. The well-structured spin polarization spectrum validates Spin-HAXPES in the valence energy range as powerful method for bulk electronic structure analysis. The spin polarization spectrum exhibits a rich structure, originating from clearly discernible transitions in the majority and minority partial spin spectra. (C) 2016 Elsevier B.V. All rights reserved.

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 Dates: 2016-05-092016-05-09
 Publication Status: Published in print
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Title: Journal of Electron Spectroscopy and Related Phenomena
  Abbreviation : J. Electron Spectrosc. Relat. Phenom.
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier B.V.
Pages: - Volume / Issue: 211 Sequence Number: - Start / End Page: 12 - 18 Identifier: ISSN: 0368-2048
CoNE: /journals/resource/954925524767