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Correlation effects in the extended Hubbard model

โœ Scribed by R. Taranko; E. Taranko


Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
702 KB
Volume
153
Category
Article
ISSN
0921-4526

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d-Wave superconductivity in the effectiv
โœ L. Arrachea; A.A. Aligia ๐Ÿ“‚ Article ๐Ÿ“… 2004 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 234 KB

We consider the effective extended Hubbard Hamiltonian for the cuprates, with nearest-neighbor hopping which depends on the occupation. Using exact diagonalization in a 4 โ€ข 4 cluster, we obtain a large enhancement of d-wave pairing correlation functions for optimum doping. The physical picture is co