On the superconductivity in (Sr, Ca)14Cu24O41 — towards a chemical standard model

The superconductivity in cuprates has been suggested to result from (a) holes clustering resonances as a means of restoring antiferromagnetic order, and (b) the formation of weak peroxy-chemical bonds. This understanding is employed here to explain the appearance of superconductivity in the ‘ladder’ compound (Sr, Ca)14Cu24O41 under pressure.