Abstract
The normal-state charge transport is studied systematically in high-quality single crystals of . By substituting isovalent P for As, the spin-density-wave (SDW) state is suppressed and the dome-shaped superconducting phase appears. Near the SDW end point , we observe striking linear temperature dependence of resistivity in a wide range, and remarkable low- enhancement of Hall-coefficient magnitude from the carrier number estimates. We also find that the magnetoresistance apparently violates the Kohler’s rule and is well scaled by the Hall angle as . These non-Fermi-liquid transport anomalies cannot be attributed to the simple multiband effects. These results capture universal features of correlated electron systems in the presence of strong antiferromagnetic fluctuations.
- Received 9 April 2010
DOI:https://doi.org/10.1103/PhysRevB.81.184519
©2010 American Physical Society