MxTiSe2 (M=Cr, Mn, Cu) electronic structure study by methods of resonance X-ray photoemission spectroscopy and X-ray absorption spectroscopy Original Research Article

Intercalation of Cu and Mn between the layers of TiSe2 leads to the charge transfer from the doped atom to Ti atoms, electronic states of which form the conduction band of TiSe2. This situation drastically differs from another one being observed during intercalation of other transition metals into TiSe2 that leads to the formation of covalent complexes consisting of intercalated atom and nearest neighborhood of the host lattice. Substitution of Ti by Cr in the host lattice positions does not show both charge transfer nor formation of covalent complexes.