Local Electric Field Effects in Microwave and dc Electrodynamics of High-T c Metal Oxides

The model of the paraelectric, which is close to the point of the Mott-Hubbard instability, is shown to explain the dc resistivity and Hall effect temperature behavior for high-T c superconductor metal oxides (HTSC). In the ground state the current is carried by a liquid of boson-like pairs of carriers in upper and lower Hubbard bands. The Mott-Hubbard instability corresponds to the order-of-lattice-constant length of the mean free path and results in the temperature insensitivity of Drude conductivity. Nearly linear on T resistivity results from the Curie law via the local (acting) electric field. Fermion-like carriers, temperature excited over the energy of boson-like pair dissociation (pseudo gap), explain the temperature behavior of Hall effect. Available data are compared with the model.