Detection of spin-resolved electronic structures from a buried ferromagnetic layer utilizing forward Mott scattering

We report ultrahigh-resolution spin-resolved hard X-ray photoemission (HAXPES) for a buried FeNi alloy film. By utilizing the forward Mott scattering in a Au layer on FeNi, our spin-resolved HAXPES method does not require a standard spin detector and allows us to use the multi-channel electron detec...

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Bibliographic Details
Published in:Applied physics letters 2014-03, Vol.104 (13)
Main Authors: Ueda, S., Mizuguchi, M., Kojima, T., Ishimaru, S., Tsujikawa, M., Shirai, M., Takanashi, K.
Format: Article
Language:English
Subjects:
Applied physics
Buried structures
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTRON DETECTION
Electron spin
ELECTRONIC STRUCTURE
FERROMAGNETIC MATERIALS
HARD X RADIATION
MOTT SCATTERING
Photoelectric emission
PHOTOEMISSION
Polarization (spin alignment)
Scattering
Spectrum analysis
SPIN
SPIN ORIENTATION
X ray spectra
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Summary:We report ultrahigh-resolution spin-resolved hard X-ray photoemission (HAXPES) for a buried FeNi alloy film. By utilizing the forward Mott scattering in a Au layer on FeNi, our spin-resolved HAXPES method does not require a standard spin detector and allows us to use the multi-channel electron detection system for the high-efficient electron detection as used in conventional photoemission spectroscopy. A combination of the forward Mott scattering and multi-channel detection leads us to measure a clear spin polarization as well as spin-resolved majority and minority states in the Fe 2p core-level spectra without using the standard spin detector. This method enables us to measure spin-resolved core-level spectra for buried ferromagnetic materials.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4868248