While it is known that the double-layer Bi2Sr2CaCu2O8+y (BSCCO) cuprate superconductor exhibits a one-dimensional (1D) incommensurate superlattice (IS), effect of IS on electronic structure remains elusive. Following recent shift interest from an underdoped phase to optimum and overdoped phases in BSCCO by increasing hole doping x, controlled oxygen interstitials concentration y, here we focus ...

In order to study the viability of coreless AC coupled coils, a superconductor transformer based on BSCCO-2223 PIT tapes was constructed. To achieve the minimum flux leakage, a toroidal geometry was selected. Both secondary and primary coils were wound around a glass fiber reinforced epoxy torus, obtaining a solid system. The field inside the transformer, the coupling factor, and the losses in ...

We determine the magnetic-field dependence of the pseudogap closing temperature T* within a precursor superconductivity scenario. Detailed calculations with an anisotropic lattice model with d-wave superconductivity account for a recently determined experimental relation in BSCCO between the pseudogap closing field and the pseudogap temperature at zero field, as well as for the weak initial dep...

Inelastic neutron scattering experiments in high-Tc cuprates have evidenced a new magnetic excitation present in the superconducting state. In particular, recent experiments on single layer Tl2Ba2CuO6+δ, performed near optimum doping (Tc ∼ 90 K), provide evidence of a sharp magnetic resonant mode below Tc, similar to previous reports on the YBCO and BSCCO bilayer systems. This result supports m...