  We explore the possibility that the ionic electron polarizabilities of the
oxygen ions in the cuprates and the bismutates and the polarizabilities of As
and Se ions in the iron pnictides contribute to charge carrier pairing leading
to high Tc superconductivity. Using the fact that the ionic polarization
response to a change in the electric field is practically instantaneous we
find, that the inter carrier electrostatic potential is attractive in a limited
distance range. This potential is used to calculate quantum mechanically the
cooper-like pairing energy and wavefunction and the gap energy showing they are
consistent with pairing and gap energies of high Tc superconductors.
Qualitative considerations suggest that this model may explain a number of
important features of high Tc superconductors.
