Fig. 8

ARPES spectra from topological surface states on Bi₂Se₃. In (a), simulated photoemission spectra along the k_x direction around the surface Brillouin zone Γ point, as observed with p-polarized light (\(\hat \epsilon = \sqrt {\frac{1}{2}} [ - 1,0,1]\)). Calculated spin-polarization, projected out of the plane of the page (c.f. Eq. (18)) for the same region is plotted in (b). Constant energy contours give evidence for bulk-hybridization and interlayer interference, as seen in both the simulation (c) and experiment (d). Data in panel (d) reproduced from⁸ with permission from the authors