Fig. 3
Summary of the observed transition from Rashba-like to Dresselhaus-like spin textures for LCB. a Band dispersion measured by ARPES (hν = 18 eV) along the cut 3 in Fig. 2a (X–M line). b Spin-resolved EDCs of P Y at a and b points in Fig. 2a, right panel shows the corresponding spin polarizations. The peak positions of spin-resolved EDCs are indicated with crosses and dots in a. The reversal of spin polarizations at a and b points leading to a different spin textures (Rashba-like and Dresselhaus-like) in LCB. c The Rashba-like spin texture of the rectangle-like shape FSs at upper part of LCB (region I in d). e The Dresselhaus-like spin texture of CECs at lower part of LCB (region II in d) derives from the crossing of spin-polarized LCB at E = Ec along X–M line, which was taken from refs. 1,8 and schematically indicated in d. The red and blue colors for arrows and energy bands represent spin-up and spin-down states, respectively
