TITLE

A new spin-polarized photoemission spectrometer with very high efficiency and energy resolution

AUTHOR(S)
Okuda, Taichi; Takeichi, Yasuo; Maeda, Yuuki; Harasawa, Ayumi; Matsuda, Iwao; Kinoshita, Toyohiko; Kakizaki, Akito
PUB. DATE
December 2008
SOURCE
Review of Scientific Instruments;Dec2008, Vol. 79 Issue 12, p123117
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A new spin- and angle-resolved photoemission spectrometer was developed adopting the very-low-energy-electron-diffraction (VLEED)-type spin polarimeter. The Fe(001)p(1×1)–O film grown on MgO(001) crystal for the VLEED target yields significantly high spin-resolving power, the effective Sherman function of 0.40±0.02, with long lifetime and stability compared to the conventional Fe(001) target. Under the favor of high resolving power, approximately 100 times higher efficiency than that of conventional Mott-type spin polarimeter, the figure of merit of 1.9±0.2×10-2 was achieved. Owing to this high efficiency, high-energy resolution can be realized with this new spin-polarized photoemission spectrometer. The simplified ways of target preparation and revitalization make the VLEED spin polarimeter much more convenient and feasible for the spin-polarized photoemission spectroscopy.
ACCESSION #
35982661

 

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