Tuning Magnetic and Electronic Properties in Exotic Silver(II) Fluorides Using Pressure*

Silver(II) fluorides exhibit unique structural, electronic and magnetic features which render them similar to parent compounds of high-TC oxocuprate superconductors. These encompass the reduced structural and magnetic dimensionality, the persistence of the Jahn-Teller effect, substantial covalence of chemical bonding between metal and nonmetal (d-p hybridization), potent magnetic superexchange via nonmetal atom, insulating charge-transfer character within the Zaanen-Sawatzky-Allen clasification, small energy band gap at the Fermi level, comparable Debye frequencies, etc. Here I will discuss the behaviour of some of these materials (including doped systems) at elevated pressure conditions as obtained from combined experimental and theoretical studies. Influence of high pressure on bonding, as well as electronic and magnetic properties, will be discussed. Possibility to achieve metallization and superconductivity will also be addressed.