Figure 4

The band structure of \(\hbox {CaCH}_{{5}}\) (a) the Pm structure at 50 GPa, (b) the Pm structure at 100 GPa, (c) the Pm structure at 200 GPa, and (d) the Pm structure at 300 GPa, respectively. The dark cyan, orange, and red circles represent, respectively, Ca, C, H atoms.