The normal-state magnetoresistance (MR) Δρ/ρ of 90-K and 60-K YBa2Cu3O7-δ and La2-xSrxCuO4 (x=0.17) has been measured in the longitudinal (field H parallel to current J) and transverse (H c) geometries, with J in-plane. In all cases, the orbital component of the MR displays a temperature dependence that strongly violates Kohler's rule. We show that the classical orbital MR measures the variance of a local Hall angle θ(s) around the Fermi surface. The anomalous transverse MR in these cuprates is closely related to the temperature dependence of the Hall angle.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)