Using the symmetric supercells and slabs indicated in Fig. , application of eq. ( ) leads to the surface energies for the Ag-terminated surfaces, which are indicated as blue bars in Fig. . In addition, the surface energies are listed in Table in the ESI. Interestingly, the surface energy calculated for the laterally compressed Ag is essentially identical to that of the bulk Ag. Here, it is important to note that for the laterally compressed Ag we used the bulk energy of the compressed Ag as a reference in eq.