Thermodynamic Green functions in theory of superconductivity
A general theory of superconductivity is formulated within the thermodynamic Green function method for various types of pairing mediated by phonons, spin fluctuations, and strong Coulomb correlations in the Hubbard and t-J models. A rigorous Dyson equation for matrix Green functions is derived in...
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| Дата: | 2006 |
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| Автор: | |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут фізики конденсованих систем НАН України
2006
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| Назва видання: | Condensed Matter Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/121371 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Thermodynamic Green functions in theory of superconductivity / N.M. Plakida // Condensed Matter Physics. — 2006. — Т. 9, № 3(47). — С. 619–633. — Бібліогр.: 27 назв. — англ. |
Репозитарії
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irk-123456789-1213712017-06-15T03:03:07Z Thermodynamic Green functions in theory of superconductivity Plakida, N.M. A general theory of superconductivity is formulated within the thermodynamic Green function method for various types of pairing mediated by phonons, spin fluctuations, and strong Coulomb correlations in the Hubbard and t-J models. A rigorous Dyson equation for matrix Green functions is derived in terms of a self-energy as a many-particle Green function. By applying the noncrossing approximation for the self-energy, a closed selfconsistent system of equations is obtained, similar to the conventional Eliashberg equations. A brief discussion of superconductivity mediated by kinematic interaction with an estimation of a superconducting transition temperature in the Hubbard model is given. Формулюється загальна теорiя надпровiдностi в рамках методу термодинамiчних функцiй Грiна для рiзних типiв спарювань через фонони, спiновi флуктуацiї та сильнi кулонiвськi кореляцiї у моделi Хаббарда та t-J моделi. Точне рiвняння Дайсона для матрицi функцiй Грiна отримано через власну енергiю як багаточастинкову функцiю Грiна. Застосовуючи неперехресне наближення для власної енергiї, отримано замкнуту самоузгоджену систему рiвнянь, подiбну до звичайних рiвнянь Елiашберга. Коротко обговорено надпровiднiсть завдяки кiнематичнiй взаємодiї та оцiнено температуру переходу у надпровiдний стан в моделi Хаббарда. 2006 Article Thermodynamic Green functions in theory of superconductivity / N.M. Plakida // Condensed Matter Physics. — 2006. — Т. 9, № 3(47). — С. 619–633. — Бібліогр.: 27 назв. — англ. 1607-324X PACS: 74.20.-z, 74.20.Mn, 74.72.-h DOI:10.5488/CMP.9.3.619 http://dspace.nbuv.gov.ua/handle/123456789/121371 en Condensed Matter Physics Інститут фізики конденсованих систем НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| description |
A general theory of superconductivity is formulated within the thermodynamic Green function method for various
types of pairing mediated by phonons, spin fluctuations, and strong Coulomb correlations in the Hubbard
and t-J models. A rigorous Dyson equation for matrix Green functions is derived in terms of a self-energy as
a many-particle Green function. By applying the noncrossing approximation for the self-energy, a closed selfconsistent
system of equations is obtained, similar to the conventional Eliashberg equations. A brief discussion
of superconductivity mediated by kinematic interaction with an estimation of a superconducting transition
temperature in the Hubbard model is given. |
| format |
Article |
| author |
Plakida, N.M. |
| spellingShingle |
Plakida, N.M. Thermodynamic Green functions in theory of superconductivity Condensed Matter Physics |
| author_facet |
Plakida, N.M. |
| author_sort |
Plakida, N.M. |
| title |
Thermodynamic Green functions in theory of superconductivity |
| title_short |
Thermodynamic Green functions in theory of superconductivity |
| title_full |
Thermodynamic Green functions in theory of superconductivity |
| title_fullStr |
Thermodynamic Green functions in theory of superconductivity |
| title_full_unstemmed |
Thermodynamic Green functions in theory of superconductivity |
| title_sort |
thermodynamic green functions in theory of superconductivity |
| publisher |
Інститут фізики конденсованих систем НАН України |
| publishDate |
2006 |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/121371 |
| citation_txt |
Thermodynamic Green functions in theory of superconductivity / N.M. Plakida // Condensed Matter Physics. — 2006. — Т. 9, № 3(47). — С. 619–633. — Бібліогр.: 27 назв. — англ. |
| series |
Condensed Matter Physics |
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2023-10-18T20:39:17Z |
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2023-10-18T20:39:17Z |
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1796150765503381504 |