Formation and superconducting properties of the (Bi,Pb)₂Sr₂Ca₂Cu₃O_10-y phase in bulk samples with oxide additions and in alloyed Ag-sheathed tapes

For a given oxygen partial pressure, the Bi, Pb(2223) phase tends to coexist with the 2201 phase for temperatures above, and the 2212 phase for temperatures below this region.. At

The doping dependence amounts essentially to an energy scaling of the tunneling spectra, with a quasiparticle gap that is reduced with increasing oxygen concentration..

The striking correspondence of the vortex core spectra with the normal state pseudogap, the similarity of the low lying excitations inside and outside the vortex cores, as well as

Voltage resolution of 0.1 nV and low critical currents permit us to determine the Hall conductivity below the vortex-lattice melting transition and to clearly correlate the

In summary, we have shown that the model by Tallon and Williams [1], although reflecting the smooth evolution of the pseudogap into the superconducting gap at T c in un- derdoped

In Bi 2 Sr 2 CaCu 2 O 8+ x (Bi-2212) round wires, the precursor powders are embedded in a Ag matrix without any diffusion barrier, and elemental diffusion from the

At high oxygen content, the structure is orthorhombic and the samples are metallic but non-superconducting.. Upon lowering the oxygen content, the symmetry changes from orthorhombic

ments, completely automated, allows one to perform a complete set of measurements in two temperature runs without changing the sample holder and contacts: in the first run, an