On similarities and differences of the electronic structure for Cu(II)/O2− and Ag(II)/F1− infinite layer compounds

We calculate and compare the band structures of a hypothetical difluoride of Ag(II) with flat [AgF2] layers and of known CaCuO2 infinite layer compound. Electronic structure of [AgF2] is strikingly similar to that of Ca[CuO2], but there are subtle differences as well. Calculations suggest that charge-doped [AgF2] materials show good prospects for superconductivity, provided that delocalization of extra charge is avoided.