A new spin-polarized photoemission spectrometer with very high efficiency and energy resolution.
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(1x1)-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+/-0.2x10(-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.
Okuda
Taichi
T
Synchrotron Radiation Laboratory (SRL), The Institute for Solid State Physics (ISSP), The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa 277-8581, Japan. okudat@issp.u-tokyo.ac.jp
Takeichi
Yasuo
Y
Maeda
Yuuki
Y
Harasawa
Ayumi
A
Matsuda
Iwao
I
Kinoshita
Toyohiko
T
Kakizaki
Akito
A