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Figure 2
(a) Front image of the two-axis cryogenic sample goniometer (iGONIO-FC). (b) Front and side views (upper and lower images, respectively) of azimuthal and tilt rotations of the sample-holder stage. (c) A Fermi surface cut of Au(111) measured by right-circular polarization light at hν = 100 eV (300 lines mm−1 VLSG). A center circle corresponds to the Shockley state, which is visualized by integrating the photoemission intensity between −0.05 and +0.05 eV in binding energy. A series of ARPES spectra were acquired by an angular mode of the SES200 analyzer with an effective acceptance angle of about ±6° (in the polar angle direction), and the tilt angle was scanned from −3.0° to +3.0° with a 0.20° step. The exit-slit width was 30 µm, and the total energy resolution was set at 0.11 eV.

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