, Volume 30, Issue 2, pp L153-L160

Normal-phase transport properties of highT c Y-Ba-Cu-O compounds

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The normal state resistivity of highT c Y-Ba-Cu-O compounds has been investigated and it is shown that the room temperature resistivity depends exponentially on the volume fraction of the non-superconducting phase. It is further shown that the dependence of normal state resistivity on temperature upto 300 K can be explained on the basis of a short-range co-operative electron-phonon coupling. This model also explains the observed positive Seebeck coefficient for the pure phase superconducting sample.