Spin-fluctuation superconductivity in the Hubbard model

• Published in: Condensed Matter Physics
• Date: 1998
• Main Author: Plakida, N.M.
• Format: Article
• Language: English
• Published: Інститут фізики конденсованих систем НАН України 1998
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/118580
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Spin-fluctuation superconductivity in the Hubbard model / N.M.Plakida // Condensed Matter Physics. — 1998. — Т. 1, № 1(13). — С. 57-68. — Бібліогр.: 22 назв. — англ.

The theory of the superconductivity mediated by kinematic and exchange interactions in t−J and two-band Hubbard models in a paramagnetic state is formulated. The Dyson equations for the matrix Green functions in terms of the Hubbard operators are obtained in the non-crossing approximation. To ca...