A far from conventional Tc-p correlation in the highly doped superconducting molybdo-cuprates: The case of Mo0.3Cu0.7Sr2TmCu2O7+δ

The highly doped region of the T-p phase diagram of the high temperature superconducting cuprates, has been, somewhat surprisingly, less explored than the rest of it. Here, we present a fresh look into the superconducting properties of Mo0.3Cu0.7Sr2YCu2O7+δ, with different oxygen contents. These have been attained by two different oxidation techniques and results in samples with a very high hole doping levels in the CuO2 superconducting planes, placing these materials in a greatly doped regime. The evolution of the critical temperature (TC) with p, reflects the displacement of the superconducting region towards much higher doping levels in comparison with conventional cuprates. Moreover, the normal state transport properties are also displaced, but not in the same extension as the superconducting region, resulting in a different superconducting to normal state correspondence in this Mo0.3Cu0.7Sr2YCu2O7+δ system.