Isotope effect in the hubbard model for d-wave superconductivity
โ Scribed by T. Dahm; D. Manske; D. Fay; L. Tewordt
- Book ID
- 104932839
- Publisher
- Springer US
- Year
- 1996
- Tongue
- English
- Weight
- 256 KB
- Volume
- 105
- Category
- Article
- ISSN
- 0022-2291
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๐ SIMILAR VOLUMES
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 โข 4 cluster, we obtain a large enhancement of d-wave pairing correlation functions for optimum doping. The physical picture is co
The two-dimensional Hubbard model has been studied within the Composite Operator Method (COM) [1] starting from a basis made of the two Hubbard composite fields in the Nambu representation and computing the residual self-energy in the non-crossing approximation (NCA) [2]. The charge-charge, spinspin