Figure 6: Temperature dependence of the photoemission data of the surface state around .

(a) Photoemission intensity of SmB₆ along cut #1 in Fig. 2a at 12, 20, 40, 60, 80, 100 and 150 K. (b) Temperature dependence of the angle-integrated spectra of panel a, the Fermi cutoff effects were removed by dividing the angle-integrated spectra by the energy-resolution convoluted Fermi–Dirac distribution functions at individual temperatures. (c) Photoemission intensity of SmB₆ along cut #2 in Fig. 2a at 12, 25, 45, 80 and 150 K. (d) Temperature dependence of the MDCs at 10 meV below E_F for data in panel c, and the shaded regions represent the difference from the 150-K data. (e) Area of the shaded region normalized by the 12-K area. The error bar is the relative uncertainty of the integrated photoelectron count. All data were taken with 21.2 eV photons.