Figure 2. Electronic band structure along high symmetry lines of the Brillouin zone (top) and the Fermi surface (bottom) of CaC₆ in the Pmmn phase at 39 GPa.

The energy bands crossing the Fermi level are labelled as 1, 2, 3, and 4, respectively. The projected Ca-d, and C3- and C4-p electron characters are denoted by red circle and blue square, respectively.