title: Electronic structure of NixTiSe2(0.05 ≤ x ≤ 0.46) compounds with ordered and disordered Ni.
abstract: The electronic structure of the NixTiSe2intercalation compounds with disordered and ordered Ni atoms is studied using photoelectron, resonant photoelectron and X-ray absorption spectroscopy, theoretical calculations of the X-ray spectra and density of electronic states. The increase in the covalent component of the chemical bond of Ni and Ti with the nearest neighbour was found with increasing nickel concentration and its ordering. A significant charge transfer from the Ni atoms to the host lattice resulting in the transformation of Ti4+into Ti3+occurs, while the symmetry of the crystal lattice is lowered from the hexagonal to the monoclinic one.
authors.affiliation: M.N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences, 620990 Yekaterinburg, Russia. shkvarin@imp.uran.ru.
authors.forename: A S
authors.identifier: http://orcid.org/0000-0002-3774-5669
authors.initials: AS
authors.lastname: Shkvarin
authors.affiliation: M.N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences, 620990 Yekaterinburg, Russia. shkvarin@imp.uran.ru.
authors.forename: Yu M
authors.identifier: http://orcid.org/0000-0001-8971-2052
authors.initials: YM
authors.lastname: Yarmoshenko
authors.affiliation: Ural Federal University, 620089 Yekaterinburg, Russia.
authors.forename: A I
authors.initials: AI
authors.lastname: Merentsov
authors.affiliation: Saint Petersburg State University, 198504 St. Petersburg, Russia.
authors.forename: Yu M
authors.identifier: http://orcid.org/0000-0001-7457-4347
authors.initials: YM
authors.lastname: Zhukov
authors.affiliation: M.N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences, 620990 Yekaterinburg, Russia. shkvarin@imp.uran.ru and Ural Federal University, 620089 Yekaterinburg, Russia.
authors.forename: A A
authors.initials: AA
authors.lastname: Titov
authors.affiliation: M.N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences, 620990 Yekaterinburg, Russia. shkvarin@imp.uran.ru.
authors.forename: E G
authors.initials: EG
authors.lastname: Shkvarina
authors.affiliation: M.N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences, 620990 Yekaterinburg, Russia. shkvarin@imp.uran.ru and Ural Federal University, 620089 Yekaterinburg, Russia.
authors.forename: A N
authors.initials: AN
authors.lastname: Titov