Figure 5: Orbital and spin polarization of SS.
From: Surface Kondo effect and non-trivial metallic state of the Kondo insulator YbB12
(a) ARPES curcular-dichroism plot taken with hν=50 eV photons at 10 K. Dichroism is obtained by subtracting the intensities of right-circularly polarized photons from those of left-circularly polarized ones. Red (blue) areas represent the maximum (minimum) dichroism values as shown by the colour scale. A dashed line in the left side is the same as that in Fig. 4b, a guide of the observed band dispersion from ARPES intensity plot. (b) Experimental geometry in this work for ARPES circular-dichroism plot shown in (a). (c) SBZ. An arrow indicates the probed region in (a). (d,e) Spin-resolved ARPES energy distribution curves (EDC) taken at 20 K. Blue (red) spectra corresponds with the spin polarization parallel (anti-parallel) to [100]. (f,g) Spin polarization of the EDC shown in (d,e) respectively. Positive (negative) value represents the spin polarization parallel (anti-parallel) to [100]. Errors are standard statistical errors from photoelectron counting.
