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

Abstract

Intercalation of Cu and Mn between the layers of TiSe 2 leads to the charge transfer from the doped atom to Ti atoms, electronic states of which form the conduction band of TiSe 2. This situation drastically differs from another one being observed during intercalation of other transition metals into TiSe 2 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. © 2012 ElsevierLtd. Allrightsreserved.