Lecturer: Prof. Yizhak Yacoby (And Dr. Yakov Girshberg) Affiliation: Racah Institute of Physics, The Hebrew University of Jerusalem Abstract: We propose a model of Cooper like pairing induced by the large ion polarizabilities of O^2- in Bismutates and Cuprates and As^3- and Se^2- in the iron pnictides. We show that the electrical potential field induced by a charge carrier contains in its vicinity pockets of negative potential causing charge carriers to attract each other. Using this model we calculate the approximate pairing and gap energies showing they are compatible with the gap energies measured in high Tc superconductors. Furthermore we show that the coherence length and the gap energy dependence on doping are consistent with those observed in high Tc systems. ‏האירוע הזה כולל שיחת וידאו ב-Google Hangouts. הצטרף: https://hangouts.google.com/hangouts/_/mail.huji.ac.il/condensed?hceid=b...