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Resonance photoelectron spectroscopy of TiX2 (X = S, Se, Te) titanium dichalcogenides

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Abstract

The photoelectron valence band spectra of TiS2, TiSe2, and TiTe2 dichalcogenides are investigated in the Ti 2p-3d resonance regime. Resonance bands in the vicinity of the Fermi energy are found for TiS2 and TiTe2. The nature of these bands is analyzed based on model calculations of the density of electronic states in TiS2, TiSe2, and TiTe2 compounds intercalated by titanium atoms. Analysis of experimental data and their comparison with model calculations showed that these bands have different origins. It is found that the resonance enhancement of an additional band observed in TiS2 is explained by self-intercalation by titanium during the synthesis of this compound. The resonance enhancement in TiTe2 is caused by occupation of the 3d band in Ti.

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Authors and Affiliations

  1. Institute of Metal Physics, Ural Division, Russian Academy of Sciences, Yekaterinburg, 620990, Russia

    A. S. Shkvarin, Yu. M. Yarmoshenko, N. A. Skorikov, A. I. Merentsov, E. G. Shkvarina & A. N. Titov

  2. Sincrotrone Trieste SCp A, Basovizza I, 34012, Italy

    M. V. Yablonskikh

Authors
  1. A. S. Shkvarin
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  2. Yu. M. Yarmoshenko
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  3. N. A. Skorikov
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  4. M. V. Yablonskikh
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  5. A. I. Merentsov
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  6. E. G. Shkvarina
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  7. A. N. Titov
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Corresponding author

Correspondence to A. S. Shkvarin.

Additional information

Original Russian Text © A.S. Shkvarin, Yu.M. Yarmoshenko, N.A. Skorikov, M.V. Yablonskikh, A.I. Merentsov, E.G. Shkvarina, A.N. Titov, 2012, published in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2012, Vol. 142, No. 5, pp. 908–915.

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Shkvarin, A.S., Yarmoshenko, Y.M., Skorikov, N.A. et al. Resonance photoelectron spectroscopy of TiX2 (X = S, Se, Te) titanium dichalcogenides. J. Exp. Theor. Phys. 115, 798–804 (2012). https://doi.org/10.1134/S1063776112100159

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  • DOI: https://doi.org/10.1134/S1063776112100159

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