Superconductivity in the system with ordinary bound pairs
I. M.Yurin, V. B. Kalinin
Institute of Physical Chemistry, Moscow, Russia
On a basis of earlier substantiated expression for effective potential of electron-electron attraction in metals the assumption of an opportunity of formation of ordinary bound electron pairs is put forward. It was shown that in distinction from the Cooper pair, the energy of the bound pair in this approach is negative in the centrum of mass of the pair. This fact changes the pattern of the superconductivity phenomenon in the proposed model. First, no Bose condensation of electron pairs does occur in the system proceeding from the proposed model. Second, the energy gap in the one-particle spectrum appears due to the effect of a “mean field” on the energy of electron state from the side of occupied states, the nearest neighbors over the momenta grid. Londons’ hypothesis is substantiated in the quasi-classical approximation; therefore this gap is proved to be linked with the supercon-ducting properties of the system.
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