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Development of hard X-ray photoelectron SPLEED-based spectrometer applicable for probing of buried magnetic layer valence states.
- Source :
-
Journal of Electron Spectroscopy & Related Phenomena . Aug2016, Vol. 211, p12-18. 7p. - Publication Year :
- 2016
-
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. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03682048
- Volume :
- 211
- Database :
- Academic Search Index
- Journal :
- Journal of Electron Spectroscopy & Related Phenomena
- Publication Type :
- Academic Journal
- Accession number :
- 117292795
- Full Text :
- https://doi.org/10.1016/j.elspec.2016.05.001