Topological Surface States with Persistent High Spin Polarization across Dirac Point in Bi${}_2$Te${}_2$Se and Bi${}_2$Se${}_2$Te

K. Miyamoto, A. Kimura, T. Okuda +9

Helical spin textures with the marked spin polarizations of topological surface states have been firstly unveiled by the state-of-the-art spin- and angle-resolved photoemission spe…