Fig. 4: Band structure evolution in the 2nd BZ.
From: Dirac cone, flat band and saddle point in kagome magnet YMn6Sn6
a Photoemission intensity plots and corresponding second derivative plots of YMn6Sn6 in 2nd BZ along Γ–M–K–Γ in the kz ~ 0 plane. The dashed lines are served as guides to the eyes. Inset: with the zoomed-in plot. b DFT + DMFT calculated ARPES in the FM state with SOC to according to the corresponding path of a and with experimental EF. Dirac point, saddle point and flat band are indicated by the blue circles and blue-colored regions, respectively. c, d EDC plots along the high-symmetry lines, with the momentum paths indicated as inset. The flat bands (FB1 and FB2) and the parabolic band (QB) are indicated by the black dashed lines with thick and thin, respectively.
