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Anomalous charge transport of the parent antiferromagnet Bi2Sr2RCu2O8

I. Terasaki, T. Takemura, T. Takayanagi, T. Kitajima

cond-mat.supr-conarXiv:cond-mat/9911153

Abstract

The resistivity and the thermopower for Bi2Sr2Ca1-xRxCu2O8 single crystals are measured and analyzed with a special interest in the parent antiferromagnet insulators. Above room temperature, the parent insulators show an electric conduction confined in the CuO2 plane and a decreasing thermopower with temperature, which are very similar to those for high-Tc cuprates. These data strongly suggest that essential anomalies of high-Tc cuprates inheres in the parent insulators.

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