Electronic excitations of potassium intercalated manganese phthalocyanine investigated by electron energy-loss spectroscopy

摘要

The electronic excitations of manganese phthalocyanine (MnPc) films werestudied as a function of potassium doping using electron energy-lossspectroscopy in transmission. Our data reveal doping induced changes in theexcitation spectrum, and they provide evidence for the existence of three dopedphases: K$_1$MnPc, K$_2$MnPc, and K$_4$MnPc. Furthermore, the addition ofelectrons first leads to a filling of orbitals with strong Mn 3d character, asituation which also affects the magnetic moment of the molecule.