Abstract
The resistivity in metals near an antiferromagnetic quantum critical point (QCP) is strongly affected by small amounts of disorder. In a quasiclassical treatment, we show that an interplay of strongly anisotropic scattering due to spin fluctuations and isotropic impurity scattering leads to a large regime where the resistivity varies as , with an anomalous exponent, , depending on the amount of disorder. I argue that this mechanism explains in some detail the anomalous temperature dependence of the resistivity observed in , , and near the QCP.
- Received 20 October 1998
DOI:https://doi.org/10.1103/PhysRevLett.82.4280
©1999 American Physical Society