On the superconductivity mechanism in metal oxide compounds

A new mechanism of superconductivity in compounds of alternating valency is suggested. Pairing of conductivity electrons is caused by their interaction with virtual excitations of the dynamic near order, describing the state of a subsystem of ions manifesting two valencies. The evaluation of the constant of electron interaction with such excitations λcon and of the temperature transition into superconducting state Tc has shown that λcon approximately 100, Tc approximately 100 K