Physcial Properties of SuperconductorNo Access
DOPING DEPENDENT ELECTRONIC STRUCTURE OF CUPRATES AND THE EFFECTIVE LOW ENERGY HAMILTONIAN FOR THE MAGNETIC PAIRING
https://doi.org/10.1142/S0217979205028335Cited by:1 (Source: Crossref)
Abstract
The properties of the normal and superconducting phases of p- and n-type cuprates are investigated in the appropriate low-energy models in the approximation beyond Hubbard I considering spin fluctuations. Calculated chemical potential dependence on doping, Fermi surface and Tc(x) phase diagram for n-type cuprates are in remarkably good agreement with the experimental ones. Comparison of the singlet-triplet t-J model with simple t-J model shows that the spin-exciton mechanism originated from singlet-triplet hybridization leads to small contribution to the Tc(x) - optimal doping value becomes slightly lower and the maximum value of Tc become slightly higher.
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