Fe 3 O 4 is an electrical conductor with a conductivity significantly higher ( X 10 6 ) than Fe 2 O 3, and this is ascribed to electron exchange between the Fe II and Fe III centres.
12.
This Meir-Wingreen formulation has been used to great success in the molecular electronics community to examine the more difficult and interesting cases where the transient electron exchanges energy with the molecular system ( for example through electron-phonon coupling or electronic excitations ).
13.
More recent models have focussed on including more accurate forms of electron exchange and correlation effects, as well as including the crystal face dependence ( this requires the inclusion of the actual atomic lattice, something that is neglected in the jellium model ).
