Abstract:
All high temperature superconductors (HTSC) contain crystal planes consisting only copper and oxygen atoms in a square lattice and superconductivity is achieved by introducing charge carriers into copper oxide insulators. Local perturbation in Cu2O plane suppresses superconductivity by strongly affecting the electronic environment. We use photoinduced electronic modification of Cu ion in CuO2 plane to investigate effect of local perturbation in Bi2Sr2Ca2Cu3O10+δ (Bi-2223)