TY - JOUR
T1 - Evolution from non-Fermi- to Fermi-liquid transport via isovalent doping in BaFe2(As1-xPx)2 superconductors
AU - Kasahara, S.
AU - Shibauchi, T.
AU - Hashimoto, K.
AU - Ikada, K.
AU - Tonegawa, S.
AU - Okazaki, R.
AU - Shishido, H.
AU - Ikeda, H.
AU - Takeya, H.
AU - Hirata, K.
AU - Terashima, T.
AU - Matsuda, Y.
PY - 2010/5/19
Y1 - 2010/5/19
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevB.81.184519
DO - 10.1103/PhysRevB.81.184519
M3 - Article
AN - SCOPUS:77955494687
SN - 1098-0121
VL - 81
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
IS - 18
M1 - 184519
ER -