par Mourachkine, Andrei 
Référence Europhysics letters, 55, 1, page (86-92)
Publication Publié, 2001-07
Référence Europhysics letters, 55, 1, page (86-92)
Publication Publié, 2001-07
Article révisé par les pairs
| Résumé : | There is a consensus that superconductivity (SC) in cuprates is two-dimensional. It is widely believed that the long-range phase coherence appears at Tc due to the Josephson coupling between SC CuO2 (bi-, tri-, ...) layers. Recent Tc and resistivity measurements in Tl2Ba2CaCu2O8 as a function of applied pressure (Salvetat J.-P. et al., Europhys. Lett., 52 (2000) 584) show that the interlayer Josephson-coupling mechanism does not fit the data. Here we analyze data obtained in Andreev reflection, neutron scattering, microwave, muon spin relaxation, tunneling and resistivity measurements performed on different cuprates, mainly, on YBa2Cu3O6+x, Bi2Sr2CaCu2O8+x, and La2-xSrxCuO4+y. The analysis of the data shows that the long-range phase coherence in the cuprates intimately relates to antiferromagnetic interactions along the c-axis. At the same time, it seems that the in-plane mechanism of SC has no or little relations to the magnetic interactions along the c-axis. |
