Email this article Investigation of the Strongly Correlated Two-Hole State of Copper in Resonant Photoemission States of Chalcogenide Materials for Photovoltaics
- Authors: Kuznetsova T.V.1,2, Grebennikov V.I.1,2, Yakushev M.V.1,2,3
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Affiliations:
- Mikheev Institute of Metal Physics, Ural Branch
- Ural Federal University named after the first President of Russia B.N. Yeltsin
- Department of Physics
- Issue: Vol 119, No 6 (2018)
- Pages: 520-522
- Section: Theory of Metals
- URL: https://journals.rcsi.science/0031-918X/article/view/167600
- DOI: https://doi.org/10.1134/S0031918X18060108
- ID: 167600
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Abstract
The processes of direct and two-stage production of photoelectrons and the participation of internal states in the spectra of electrons from valence bands with resonant photoemission in copper chalcogenides Cu(In,Ga)Se2 have been studied experimentally. Final two-hole states in photoemission have been obtained at the threshold excitation of the Cu 2p level. The strong interaction of holes leads to the multiplet splitting of these states. The value of the Hubbard repulsion of holes on the copper atom has been found to be 7 eV.
About the authors
T. V. Kuznetsova
Mikheev Institute of Metal Physics, Ural Branch; Ural Federal University named after the first President of Russia B.N. Yeltsin
Author for correspondence.
Email: kuznetsova@ifmlrs.uran.ru
Russian Federation, Ekaterinburg, 620108; Ekaterinburg, 620002
V. I. Grebennikov
Mikheev Institute of Metal Physics, Ural Branch; Ural Federal University named after the first President of Russia B.N. Yeltsin
Email: kuznetsova@ifmlrs.uran.ru
Russian Federation, Ekaterinburg, 620108; Ekaterinburg, 620002
M. V. Yakushev
Mikheev Institute of Metal Physics, Ural Branch; Ural Federal University named after the first President of Russia B.N. Yeltsin; Department of Physics
Email: kuznetsova@ifmlrs.uran.ru
Russian Federation, Ekaterinburg, 620108; Ekaterinburg, 620002; Glasgow
