Figure 2: Spin-orbital texture of the surface state. | Scientific Reports

Figure 2: Spin-orbital texture of the surface state.

From: Quantum spin Hall insulators in centrosymmetric thin films composed from topologically trivial BiTeI trilayers

Figure 2

(a) Spatial localization of the topological surface state as a function of z, where z = 0 corresponds to the surface plane for Bi2Te2I2 and Bi2Te2. Spin-resolved constant energy contours are taken at 75 meV above (b) and at 50 meV below (c) the Dirac point (DP). Black arrows adjacent to the contours denote the in-plane spin component S||; the out-of-plane spin component Sz is indicated by the color in contour, with red and blue corresponding to positive and negative values, respectively. Projections of the total spin for upper Dirac cone, shown in panel (b), on the px (d), py (e), and pz (f) orbitals.

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