Fig. 4: Devil’s staircase evolution of the electronic structures.
From: Devil's staircase transition of the electronic structures in CeSb
a Temperature evolution of the laser-ARPES images for c-domain from 20 K (P phase) to 7.0 K (AF phase) by a 0.5 K step (see also Supplementary Movie 1). b–i Laser-ARPES images around EF at each phase through the devil's staircase, and the corresponding momentum distribution curves (MDCs). The MDCs at EF are highlighted with bold lines. Representative changes of the band dispersions by temperature are guided by colored lines. j Temperature evolution of the MDCs at EF taken from the ARPES images shown in a. The MDCs at each phase in b–i are highlighted with bold lines. k, l Its two-dimensional map and the corresponding curvature plot43 for kx > 0 to clearly visualize the appearances/disappearances of the quasiparticle peaks, corresponding to the devil's staircase transitions. The colored solid lines are the transition temperatures previously determined by specific heat measurement10. The colored arrows, circles, and dashed lines indicate the representative peaks in the different phases.
