The results of investigations of intercalated compounds Cr_xTiSe_2 and Co_xTiSe_2 by X-ray photoelectron spectroscopy (XPS) and X-ray emission spectroscopy (XES) 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 M3d--Ti3d hybridization (M=Cr, Co) and the magnetic moment at the M site is discussed. A 0.9 eV large splitting of the core Cr2p{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 Cr3d electrons (for x<0.25), the broadening of the CrL spectra into the region of the states above the nominal Fermi level was observed and attributed to X-ray re-emission. The measured kinetic properties are in good accordance with spectral investigations and band calculation results.
@article{arxiv.cond-mat/0005153,
title = {Electronic structure of Co_xTiSe_2 and Cr_xTiSe_2},
author = {A. N. Titov and A. V. Kuranov and V. G. Pleschev and Yu. M. Yarmoshenko and M. V. Yablonskikh and A. V. Postnikov and S. Plogmann and M. Neumann and A. V. Ezhov and E. Z. Kurmaev},
journal= {arXiv preprint arXiv:cond-mat/0005153},
year = {2009}
}