𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A Cu d-d excitation model for the pairing in the high-Tc cuprates

✍ Scribed by W. Weber; A.L. Shelankov; X. Zotos

Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
143 KB
Volume
153-155
Category
Article
ISSN
0921-4534

No coin nor oath required. For personal study only.

πŸ“œ SIMILAR VOLUMES

A weak-coupling limit of the d - d excit
A weak-coupling limit of the d - d excitation model for the high-Tc cuprates
✍ A.L. Shelankov; X. Zotos; W. Weber πŸ“‚ Article πŸ“… 1988 πŸ› Elsevier Science 🌐 English βš– 138 KB

An effective Hamiltonian is developed for the d-d excitation model in the atomic limit. In a weak coupling approximation it is shown that the interaction between itinerant oxygen p holes mediated by virtual d -d excitations of Cu ++ may lead to superconductivity of purely electronic origin.

d-Wave superconductivity in the effectiv
d-Wave superconductivity in the effective extended Hubbard model for cuprates
✍ L. Arrachea; A.A. Aligia πŸ“‚ Article πŸ“… 2004 πŸ› Elsevier Science 🌐 English βš– 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 β€’ 4 cluster, we obtain a large enhancement of d-wave pairing correlation functions for optimum doping. The physical picture is co