We discuss the interpretation of usually broad oxidation peaks observed in electronically conducting polymers, in terms of the statistical distributions functions of polarons and bipolarons. The analysis is based on examining the chemical capacitance, that relates the change of concentration to a modification of the chemical potential of a given species, for different statistical models. We fir...

High-temperature superconductivity has transformed the landscape of solid state science, leading to the discovery of new classes of materials, states of matter, and concepts. However, despite being over a quarter of a century since its discovery, there is still no single accepted theory to explain its origin. This book presents one approach, the strong-coupling or bipolaron theory, which propos...

Abstract A highly uniform nanostructured polypyrrole (PPy) film prepared by a simple, straightforward in situ route of chemical vapor oxidation has been demonstrated as sensitive substrate for NH 3 gas sensing. The structure PPy was investigated scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and diffraction (XRD). binding characteristics the functional groups we...

A single-particle spectral density is proposed for cuprates taking into account the bipolaron formation, realistic band structure, thermal fluctuations and disorder. Tunnelling and photoemission (PES) spectra are described, including the temperature independent gap observed both in the superconducting and normal states, the emission/injection asymmetry, the finite zero-bias conductance, the spe...

We propose a microscopic theory of the 'c'-axis and in-plane transport of copper oxides based on the bipolaron theory and the Boltzmann kinetics. The fundamental relationship between the anisotropy and the spin susceptibility is derived, ρ c (T, x)/ρ ab (T, x) ∼ x/ √ T χ s (T, x). The temperature (T) and doping (x) dependence of the in-plane, ρ ab and out-of-plane, ρ c resistivity and the spin ...