Abstract
We study the extended t–J model on a square lattice, which has the second and third-neighbor hopping terms (t′ and t″, respectively) as well as the nearest-neighbor one using the slave-boson mean-field approximation. It is found that the phase diagram consistent with the experiments for multilayer high-Tc cuprates is obtained for a suitable choice of t′ and t″. Temperature dependence of the uniform spin susceptibility is also calculated in the coexistence of antiferromagnetism and d-wave superconductivity.
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