Fig. 1: Hole bands of nematic FeSe1−xTex.
From: Resurgence of superconductivity and the role of dxy hole band in FeSe1−xTex
a Angle-resolved photoemission spectroscopy (ARPES) spectra measured at the Z high-symmetry point along the A − Z − A direction at 10 K using linear horizontal (LH) light polarisation. b The corresponding two-dimensional curvature of the ARPES data from a using the method in ref. 35. The solid points are the band positions extracted from Lorentzian fits to the momentum distribution curves (MDCs) (α and β bands), maximums in the energy distribution curves (EDCs) (β band) and extrema in the curvature of the EDCs (γ band). The solid lines are fits to the band positions using the low-energy model discussed in the Supplementary Note 2. c ARPES spectra for the same dispersions as in a but measured using linear vertical (LV) light polarisation. The solid points are the band positions extracted from MDC analysis, and the solid curve is a parabolic fit to the data. The solid lines in b and c corresponds to the outer hole band, α (red), the inner hole band, β (green) and the flatter dxy hole band, γ (blue). d MDCs taken at the Fermi level to determine the Fermi wavevector (kF) from a, where the errors are equal to half of the full-width half-maximum from the Lorentzian fits (dashed curves). e The extracted hole dispersions of the α and β bands for different x using LH polarisation. f The extracted β bands using LV polarisation. Different colours in d, e and f refer to the x compositions, as indicated in d.
