Figure 2: Band structure and Fermi surfaces of SrBi3.
From: Spin-orbit coupling enhanced superconductivity in Bi-rich compounds ABi3 (A = Sr and Ba)

(a) The band dispersion of SrBi3 with (the red lines) and without (the grey lines) SOC. (b–e) are the Fermi surface of SrBi3 with SOC, while (g–j) are those without SOC. (f,k) are the middle cross sections of (e,j). The blue arrow in (k) denotes the nesting vector M.