Green function approach to the theory of superconductivity in the t - J model
The theory of superconducting pairing due to the exchange and kinematical interactions in the t - J model in a paramagnetic state is developed. The Dyson equation for the matrix Green functions in terms of the Hubbard operators is obtained in the noncrossing approximation. The linearized self-сo...
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| Date: | 1998 |
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| Main Author: | |
| Format: | Article |
| Language: | English |
| Published: |
Інститут фізики конденсованих систем НАН України
1998
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| Series: | Condensed Matter Physics |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/119898 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Green function approach to the theory of superconductivity in the t - J model / N.M. Plakida // Condensed Matter Physics. — 1998. — Т. 1, № 4(16). — С. 905-917. — Бібліогр.: 19 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | The theory of superconducting pairing due to the exchange and kinematical interactions in the t - J model in a paramagnetic state is developed.
The Dyson equation for the matrix Green functions in terms of the Hubbard
operators is obtained in the noncrossing approximation. The linearized self-сonsistent system of Eliashberg equations is proposed to study the temperature and doping dependence of the quasi-particle hole spectrum in
the normal state and to calculate the temperature of the superconducting
phase transition and the symmetry of the gap function. |
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