Fig. 5: Collapses of the quasiparticle coherence at EF.
From: Devil's staircase transition of the electronic structures in CeSb
a Temperature evolution of the laser-ARPES images for ab-domain from 20 K (P phase) to 7.0 K (AF phase) by a 0.5 K step (see also Supplementary Movie 1). b–d The laser-ARPES images around EF at the representative phases. e The schematics of the observed evolution of (red line) the main hole band dispersion and (blue line) the folded band appeared around E − EF = 0.12 eV in AFP5 phase. f, g The three-dimensional ARPES images at 11.5 K (AFP5 phase) and 7.0 K for (AF phase), respectively. h Temperature evolution of the spectral shape in the energy distribution curves (EDCs) cut at a +kx point of the hole band at AF phase (black dashed line in b–d). In the top and bottom panels, the data are displayed with and without an offset, respectively. The representative EDCs corresponding to the different phases are highlighted in bold lines. i–k The EDCs at various temperatures for each phase.
