Figure 3. Evolution of surface state band structure and electron self-energy with the composition, x, in Bi₂(Te_3−xSe_x) system.

(a) The surface state band structure of Bi₂Te_3−xSe_x with various compositions, x, measured along the direction. (b) The surface state band structure of n-type Bi₂Te₃ along the direction. (c) Corresponding effective real part of the electron self-energy (black circles) and imaginary part of the electron self-energy (blue squares) for Bi₂(Te_3−xSe_x) with different compositions. (d) Corresponding effective real part of the electron self-energy (black circles) and imaginary part of the electron self-energy (blue squares) for n-type Bi₂Te₃.