Figure 1 | Scientific Reports

Figure 1

From: Tuning the vertical location of helical surface states in topological insulator heterostructures via dual-proximity effects

Figure 1

Schematic illustration on tuning the vertical location of the topological surface states (TSS) as a topological insulator (TI) is covered with a layer of conventional insulator (CI).

(a), TSS floating to the top of the CI. (b), Staying put at the CI/TI interface. (c), Diving into the TI. (d), The atomic structure of ZnM/Bi2Se3 (M = S, Se, Te). The red lines denote the TSS; the arrows indicate the resulting directions of the topological phase transition.

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