Figure 3
Grandcanonical thermodynamic potential difference \(\Delta \Omega\) of the heterostructures evaluated for several substrates (a) C-terminated SiC(000\(\bar{1}\)) and (b) Si-terminated SiC(0001), and (c) Si-terminated SiC(0001) + ZLG. The difference \(\Delta \Omega\) takes as a reference the thermodynamic potential \(\Omega\) of the fully intercalated system with 14 Pb atoms in the \((\sqrt{7}\times \sqrt{7})R19.1^\circ\) cell for each substrate. It is plotted versus the difference between the chemical potential of an arbitrary lead reservoir \(\mu _{Pb}\) and that of the bulk Pb metal \(\mu _{Pb}^{metal}\).
