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Absence of superconductivity in the 1d extended hubbard model with repulsive interactions

✍ Scribed by R.T. Clay; A.W. Sandvik; D.K. Campbell


Book ID
117542196
Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
228 KB
Volume
103
Category
Article
ISSN
0379-6779

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d-Wave superconductivity in the effectiv
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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 β€’ 4 cluster, we obtain a large enhancement of d-wave pairing correlation functions for optimum doping. The physical picture is co