Pekar bipolaron and the virial theorem (arbitrary coupling)
The work is devoted to issues related with implementation of the virial theorem for one-center bipolaron. The virial theorem expressions have been obtained for an electron system with Coulomb interactions in the phonon field. It is shown that for the bipolaron functional (one-center configuration...
Збережено в:
| Опубліковано в: : | Semiconductor Physics Quantum Electronics & Optoelectronics |
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| Дата: | 2014 |
| Автор: | |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
2014
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/118494 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Pekar bipolaron and the virial theorem (arbitrary coupling) / N.I. Kashirina // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2014. — Т. 17, № 3. — С.260-267. — Бібліогр.: 30 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | The work is devoted to issues related with implementation of the virial
theorem for one-center bipolaron. The virial theorem expressions have been obtained for
an electron system with Coulomb interactions in the phonon field. It is shown that for the
bipolaron functional (one-center configuration) virial theorem holds for arbitrary
electron-phonon coupling. As a specific example of the virial theorem for one-center
bipolaron configuration, the author adduces numerical calculations of the energy of the
ground state and the various contributions (kinetic energy, electron-phonon interaction,
electron energy, phonon energy) into the energy of bipolaron, performed within the
framework of Buimistrov-Pekar method. It is shown that the virial theorem is fulfilled
with high accuracy for the two-electron systems with Coulomb interactions for an
arbitrary value electron-phonon coupling. The necessary condition for formation of a
bipolaron stable state is accounting electron correlations associated with the direct
dependence of the trial electron wave function of the system from the interelectron
distance.
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| ISSN: | 1560-8034 |