Anomalous Optical Conductivity in the Normal State of HighTcOxides

Abstract
The optical resistivity due to antiferromagnetic spin fluctuations in two-dimensional metals, as a possible model for high T c oxides, is calculated within the Born approximation and the self-consistent renormalization (SCR) theory for the spin fluctuations. The result is shown to explain the observed anomalous behavior of optical conductivity in YBa 2 Cu 3 O 7 above T c quantitatively.