Fig. 2: Observation of splitting-like electron bands in ab- and c-domains.
From: Unconventional band splitting of CeSb in the devil’s staircase transition
a Fermi surface map of the ab-domain measured using 28 eV photons at T = 6.4 K. b Relationship between photon energy and kz in the kz-kx plane. c, d ARPES spectra along \(\bar{\Gamma }{\bar{\rm X}}_{{{\rm{PM}}}}\) of cut 1 in (a) and the corresponding second derivative images, measured using 28 eV photons at T = 6 K and 19.2 K, respectively. e, f, g ARPES spectra along \(\bar{\Gamma }{\bar{\rm X}}_{{{\rm{PM}}}}\) of cut 2 in (a) and the corresponding second derivative spectra, measured at 6.4 K with 28 eV and 22 eV photons, and 19.2 K with 28 eV photons, respectively. h Fermi surface map of the c-domain at 6.4 K with 28 eV photons. i-k ARPES spectra along \(\bar{\Gamma }{\bar{\rm X}}_{{{\rm{PM}}}}\) of cut 3 in (h) and the corresponding second derivative spectra, measured at 8.1 K with 28 eV photons, 6.6 K with 22 eV photons, and 19.2 K with 28 eV photons, respectively.
