The normal-state charge transport is studied systematically in high-quality single crystals of BaFe2(As1-xPx)2 (0≤x≤0.71). By substituting isovalent P for As, the spin-density-wave (SDW) state is suppressed and the dome-shaped superconducting phase (T c≲31 K) appears. Near the SDW end point (x≈0.3), we observe striking linear temperature (T) dependence of resistivity in a wide T range, and remarkable low- T 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 ΘH as Δ ρxx/ρxx αtan2 ΘH. 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.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - May 19 2010|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics