Electronic spectrum and superconductivity in Hubbard model
A microscopic theory of electronic spectrum and superconducting pairing within the Hubbard model is formulated. The Dyson equation for the normal and anomalous Green functions in terms of the Hubbard operators is derived by applying the Mori-type projection technique. The self-energy is evaluated...
Збережено в:
| Дата: | 2008 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут фізики конденсованих систем НАН України
2008
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| Назва видання: | Condensed Matter Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/119345 |
| Теги: |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Electronic spectrum and superconductivity in Hubbard model / N.M. Plakida, V.S. Oudovenko // Condensed Matter Physics. — 2008. — Т. 11, № 3(55). — С. 495-507. — Бібліогр.: 34 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | A microscopic theory of electronic spectrum and superconducting pairing within the Hubbard model is formulated.
The Dyson equation for the normal and anomalous Green functions in terms of the Hubbard operators
is derived by applying the Mori-type projection technique. The self-energy is evaluated in the noncrossing
approximation for electron scattering on spin and charge fluctuations induced by kinematic interaction for
Hubbard operators. Numerical results for electron dispersion in the strong correlation limit are presented.
Superconducting pairing mediated by antiferromagnetic exchange and spin fluctuations is discussed. |
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