Structural mechanism of the formation of high-temperature superconductors based on copper (II)

A theoretical evaluation of the structural mechanism for the formation of Cu(II)-based HTSC is presented. Structural data are used to perform a comparative analysis of the coordination environment and the length of Cu-O bonds in HTSC phases and other Cu(II) compounds. It is shown that the asymmetry of the near environment and the external matrix optimizes the h condensation process in conducting layers and is its necessary component. The short-range order formed in the Cu(II) polyhedron formed in this manner prescribes the long-range order and determines the appearance of the superstructure order of h in the CuO2 layers, which in turn determines the creation of conducting layers over macroscopic distances.