The results of investigations of intercalated compounds ${\mathrm{Cr}}_x{\mathrm{TiSe}}_2$ and ${\mathrm{Co}}_x{\mathrm{TiSe}}_2$ by x-ray photoelectron spectroscopy and x-ray emission spectroscopy are presented. The data obtained are compared with theoretical results of spin-polarized band-structure calculations. A good agreement between theoretical and experimental data for the electronic structure of the investigated materials has been observed. The interplay between the M $3d–\mathrm{Ti}$ $3d$ hybridization $(M=\mathrm{Cr},$ Co) and the magnetic moment at the M site is discussed. A 0.9-eV large splitting of the core $\mathrm{Cr}{2p}_{3/2}$ level was observed, which reveals a strong exchange magnetic interaction of $3d-2p$ electrons of Cr. In the case of a strong localization of the Cr $3d$ electrons (for $x<\mathrm{}0.25),$ the broadening of the Cr L spectra into the region of the states above the nominal Fermi level was observed and attributed to x-ray reemission. The measured kinetic properties are in good accordance with spectral investigations and band calculation results.

• Received 4 February 2000

DOI:https://doi.org/10.1103/PhysRevB.63.035106