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PAIRING, CONDENSATION, AND SUPERCONDUCTIVITY DESCRIBED BY A HUBBARD-MODEL WITH AN ATTRACTIVE INTERACTION
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UNSPECIFIED (1991) PAIRING, CONDENSATION, AND SUPERCONDUCTIVITY DESCRIBED BY A HUBBARD-MODEL WITH AN ATTRACTIVE INTERACTION. PHYSICAL REVIEW B, 44 (10). pp. 5190-5208. ISSN 0163-1829
Full text not available from this repository.Abstract
We have developed a method for studying superconductivity in the negative-U Hubbard model. It is based on the Hubbard-alloy-analogy approximation applied to the Gor'kov equation for the model. We find that, unlike the case of the BCS solution, the formation of pairs and their condensation into a super-conducting ground state take place at two different temperatures. We calculate the condensation temperature T(c) for all U and discuss the nature of the normal state which, for large enough U, features a macroscopically large number of pairs. Briefly, we argue that the model has relevance for high-temperature superconductors.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QC Physics |
| Journal or Publication Title: | PHYSICAL REVIEW B |
| Publisher: | AMERICAN PHYSICAL SOC |
| ISSN: | 0163-1829 |
| Date: | 1 September 1991 |
| Volume: | 44 |
| Number: | 10 |
| Number of Pages: | 19 |
| Page Range: | pp. 5190-5208 |
| Publication Status: | Published |
| URI: | http://wrap.warwick.ac.uk/id/eprint/22505 |
Data sourced from Thomson Reuters' Web of Knowledge
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