Microscopic theory of high-temperature superconductivity in strongly correlated electronic systems
A consistent microscopic theory of superconductivity for strongly correlated electronic systems is presented. The Dyson equation for the normal and anomalous Green functions for the projected (Hubbard) electronic operators is derived. To compare various mechanisms of pairing, the extended Hubbard mo...
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Online Access: | https://doi.org/10.5488/CMP.23.43701 |
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doaj-ea897d9277c74216828828bcaec2458f2021-01-11T13:33:58ZengInstitute for Condensed Matter PhysicsCondensed Matter Physics1607-324X2224-90792021-01-012344370110.5488/CMP.23.43701Microscopic theory of high-temperature superconductivity in strongly correlated electronic systemsN.M. PlakidaA consistent microscopic theory of superconductivity for strongly correlated electronic systems is presented. The Dyson equation for the normal and anomalous Green functions for the projected (Hubbard) electronic operators is derived. To compare various mechanisms of pairing, the extended Hubbard model is considered where the intersite Coulomb repulsion and the electron-phonon interaction are taken into account. We obtain the d-wave pairing with high-Tc induced by the strong kinematical interaction of electrons with spin fluctuations, while the Coulomb repulsion and the electron-phonon interaction are suppressed for the d-wave pairing. These results support the spin-fluctuation mechanism of high-temperature superconductivity in cuprates previously proposed in phenomenological models.https://doi.org/10.5488/CMP.23.43701strongly correlated electron systemshubbard modelunconventional superconductivitycuprate superconductors |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
N.M. Plakida |
spellingShingle |
N.M. Plakida Microscopic theory of high-temperature superconductivity in strongly correlated electronic systems Condensed Matter Physics strongly correlated electron systems hubbard model unconventional superconductivity cuprate superconductors |
author_facet |
N.M. Plakida |
author_sort |
N.M. Plakida |
title |
Microscopic theory of high-temperature superconductivity in strongly correlated electronic systems |
title_short |
Microscopic theory of high-temperature superconductivity in strongly correlated electronic systems |
title_full |
Microscopic theory of high-temperature superconductivity in strongly correlated electronic systems |
title_fullStr |
Microscopic theory of high-temperature superconductivity in strongly correlated electronic systems |
title_full_unstemmed |
Microscopic theory of high-temperature superconductivity in strongly correlated electronic systems |
title_sort |
microscopic theory of high-temperature superconductivity in strongly correlated electronic systems |
publisher |
Institute for Condensed Matter Physics |
series |
Condensed Matter Physics |
issn |
1607-324X 2224-9079 |
publishDate |
2021-01-01 |
description |
A consistent microscopic theory of superconductivity for strongly correlated electronic systems is presented. The Dyson equation for the normal and anomalous Green functions for the projected (Hubbard) electronic operators is derived. To compare various mechanisms of pairing, the extended Hubbard model is considered where the intersite Coulomb repulsion and the electron-phonon interaction are taken into account. We obtain the d-wave pairing with high-Tc induced by the strong kinematical interaction of electrons with spin fluctuations, while the Coulomb repulsion and the electron-phonon interaction are suppressed for the d-wave pairing. These results support the spin-fluctuation mechanism of high-temperature superconductivity in cuprates previously proposed in phenomenological models. |
topic |
strongly correlated electron systems hubbard model unconventional superconductivity cuprate superconductors |
url |
https://doi.org/10.5488/CMP.23.43701 |
work_keys_str_mv |
AT nmplakida microscopictheoryofhightemperaturesuperconductivityinstronglycorrelatedelectronicsystems |
_version_ |
1724341379326279680 |