A microscopic explanation of the low-frequency kinetic properties of metal oxides is proposed. It is based on a strong electron-phonon interaction, which forms a charged Bose liquid of small bipolarons. The large value, the nonKorringa temperature dependence above T c, and the absence below T c of the coherent peak of the nuclear spin relaxation, as well as an unexpected “coherent peak” of the low frequency dynamic conductivity and the linear T-dependence of the resistivity are explained.
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Alexandrov, A.S. Low-frequency kinetics of high-T c metal oxides. J Low Temp Phys 87, 721–729 (1992). https://doi.org/10.1007/BF00118331
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DOI: https://doi.org/10.1007/BF00118331