| Автор | Natalie I Pavlenko |
| Дата выпуска | 1999-07-05 |
| dc.description | A microscopic model for the description of the proton subsystem dynamics in superionic crystals with hydrogen bonds is developed. Besides the inclusion of the proton-transport mechanism, the effect of the displacement of the nearest oxygens during hydrogen-bond formation is taken into account. The latter effect is the cause of the strong proton-phonon coupling that leads to the polaronic effect. Using the occupation number formalism, the virtual (in superionic phases) or ordered (in low-temperature phases) character of the hydrogen-bonded system is taken into account on the basis of the proton-ordering model. Protonic conductivity studies are carried out in the framework of the Kubo theory for the cases of superionic phases as well as low-temperature phases with different types of proton ordering (as an example the M<sub>3</sub>H(XO<sub>4</sub>)<sub>2</sub> class of crystals is considered). The temperature dependencies of the conductivity are analysed. The activation energies for the static conductivity are determined; for this case the influence of the internal field which appears as a result of the proton ordering is investigated. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Protonic conductivity at the superionic phase transitions in the M<sub>3</sub>H(XO<sub>4</sub>)<sub>2</sub> crystal group |
| Тип | paper |
| DOI | 10.1088/0953-8984/11/26/311 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 11 |
| Первая страница | 5099 |
| Последняя страница | 5110 |
| Аффилиация | Natalie I Pavlenko; Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine, 1 Svientsitsky Street, UA-290011 Lviv, Ukraine |
| Выпуск | 26 |
