Further detailing of the Bose–Einstein negative-U state in the high temperature superconducting cuprates Original Research Article

The cause of the sharp and universal optimization of the HTSC condensation energy at the hole doping concentration of p=0.19 is identified within the context of the boson–fermion negative-U modelling, and stripe phase electronic organization. Some recent structural, optical and positron annihilation experiments adding further support to this type of modelling of HTSC are briefly examined