Absorption spectroscopic study of the conduction band of titanium dichalcogenides

• Published in: Physics of the solid state Vol. 50; no. 6; pp. 1186 - 1190
• Main Authors: Titov, A. N., Yarmoshenko, Yu. M., Zimina, A., Yablonskikh, M. V., Postnikov, A. V., Eisebitt, S.
• Format: Journal Article
• Language: English
• Published: Dordrecht SP MAIK Nauka/Interperiodica 01-06-2008
• Subjects: Low-Dimensional Systems and Surface Physics; Physics; Physics and Astronomy; Solid State Physics; 73.20.At; 79.60.-i
• ISSN: 1063-7834; 1090-6460
• DOI: 10.1134/S1063783408060292

The
L
2, 3
spectra of titanium in the layered compound TiSe
2
and intercalated compounds Fe
1/2
TiSe
2
, Cr
1/3
TiSe
2
, and Fe
1/4
TiTe
2
are studied. Theoretical calculations of the electronic structure of these compounds are performed. The experimental data and calculations suggest that the intercalation of the Cr and Fe atoms into the TiSe
2
matrix brings about a partial filling of the Ti 3
d
states and the spin polarization of the Cr 3
d
and Fe 3
d
states. Chemical bonds are formed through the hybridization of the
d
orbitals of intercalated atoms with the Ti 3
d
-Se 4
p
states of the matrix.