First principle calculations of thermodynamic properties of pure graphene sheet and graphene sheets with Si, Ge, Fe, and Co impurities

Kheyri A¹, Nourbakhsh Z^{2, †,}

The heat capacity at constant volume (C_V) as a function of temperature for (a) pure graphene, (b) Si–graphene, (c) Ge–graphene, (d) Fe–graphene, and (e) Co–graphene sheets at different pressures. The black lines are for 3.1% impurity density and the blue ones for 12.5%.