Prediction of a New Phase of Cu_xS near Stoichiometric Composition

Table 2

Cohesive energies of selected low-energy stoichiometric Cu₂S structures are listed.

Structure name	Cohesive energy per formula unit (eV)
Acanthite	−10.653
Material project	−10.638
Low chalcocite	−10.637
Stromeyerite	−10.631
AF-Cu2S	−10.379
Berzelianite	−9.995