Отправить статью по E-mail Two-electron exchange between neutral and ionized negative-U tin centers in lead chalcogenides
- Авторы: Marchenko A.V.1, Bobokhuzhaev K.U.2, Zharkoi A.B.1, Nikolaeva A.V.1, Seregin P.P.1
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Учреждения:
- Gertsen State Pedagogical University
- Ulugbek National University of Uzbekistan
- Выпуск: Том 52, № 5 (2016)
- Страницы: 452-458
- Раздел: Article
- URL: https://journals.rcsi.science/0020-1685/article/view/157538
- DOI: https://doi.org/10.1134/S0020168516050101
- ID: 157538
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Аннотация
Two-electron exchange between neutral and doubly ionized negative-U tin centers in PbS and PbSe has been studied by Mössbauer emission spectroscopy. The activation energy for this process in PbS is 0.11(2) eV, which is comparable to the depth of tin levels in the band gap of PbS, whereas the activation energy for this process in PbSe, 0.05(1) eV, is comparable to the correlation energy of negative-U donor tin centers in PbSe. The exchange occurs through simultaneous transfer of two electrons and involves valence band states.
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Об авторах
A. Marchenko
Gertsen State Pedagogical University
Email: ppseregin@mail.ru
Россия, nab. Moiki 48, St. Petersburg, 191186
K. Bobokhuzhaev
Ulugbek National University of Uzbekistan
Email: ppseregin@mail.ru
Узбекистан, Vuzgorodok, Tashkent, 700095
A. Zharkoi
Gertsen State Pedagogical University
Email: ppseregin@mail.ru
Россия, nab. Moiki 48, St. Petersburg, 191186
A. Nikolaeva
Gertsen State Pedagogical University
Email: ppseregin@mail.ru
Россия, nab. Moiki 48, St. Petersburg, 191186
P. Seregin
Gertsen State Pedagogical University
Автор, ответственный за переписку.
Email: ppseregin@mail.ru
Россия, nab. Moiki 48, St. Petersburg, 191186
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