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Two-electron exchange between impurity centers of tin in PbS z Se1–z solid solutions

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Abstract

Using emission Mössbauer spectroscopy on 119mmSn(119mSn) and 119Sb(119mSn) isotopes, the electron exchange process between neutral and doubly ionized U – tin centers is studied in partially compensated PbS z Se1–z solid solutions. The activation energy of this process for compositions with z ≈ 1 is comparable to the deposition depth of the tin energy levels in the band gap of PbS (~0.11(1) eV, and for compositions with z ≈ 1, it is comparable with the correlation energy of donor U – tin centers in PbSe (~0.05(1) eV). For all compositions of solid solutions, the exchange is realized by the simultaneous transfer of two electrons with the use of the delocalized states of the valence band.

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Authors and Affiliations

  1. Herzen Russian State Pedagogical University, St. Petersburg, 191186, Russia

    A. V. Marchenko, E. N. Rasnyuk, P. P. Seregin & A. V. Shaldenkova

  2. St. Petersburg Mining University, St. Petersburg, 199106, Russia

    A. Yu. Egorova

Authors
  1. A. V. Marchenko
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  2. A. Yu. Egorova
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  3. E. N. Rasnyuk
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  4. P. P. Seregin
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  5. A. V. Shaldenkova
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Correspondence to P. P. Seregin.

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Original Russian Text © A.V. Marchenko, A.Yu. Egorova, E.N. Rasnyuk, P.P. Seregin, A.V. Shaldenkova, 2017, published in Fizika i Khimiya Stekla.

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Marchenko, A.V., Egorova, A.Y., Rasnyuk, E.N. et al. Two-electron exchange between impurity centers of tin in PbS z Se1–z solid solutions. Glass Phys Chem 43, 53–62 (2017). https://doi.org/10.1134/S1087659617010084

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  • DOI: https://doi.org/10.1134/S1087659617010084

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