Fig. 4: First-principles calculations of Bi2Se3.
From: Correlated plasmons in the topological insulator Bi2Se3 induced by long-range electron correlations
a Atomistic structure of Bi2Se3 (side view). Band structure of Bi2Se3 slabs b without doping and c with 0.12 electron doping. Calculated imaginary dielectric function d and loss function e of the Bi2Se3 primitive cell with electron doping. The contributions of the xx and yy components are equal in both cases.
