Doping effect on the carrier scattering in iron-pnictide superconductors studied by charge transport

Shigeyuki Ishida, Masamichi Nakajima, Motoyuki Ishikado, Yasuhide Tomioka, Toshimitsu Ito, Kiichi Miyazawa, Chul Ho Lee, Hijiri Kito, Shin Ichi Shamoto, Akira Iyo, Hiroshi Eisaki, Kenji M. Kojima, Teruhisa Kakeshita, Shin Ichi Uchida

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

摘要

In order to reveal the role of carrier doping in the iron-based superconductors, we investigated the transport properties of the oxygen-deficient iron-arsenides LnFeAsO1-y (Ln=La, Ce, Pr and Nd) over a wide doping range. We found that the effect of doping in this system is mainly on the carrier scattering rather than carrier density, quite distinct from that in high-Tc cuprates. In the case of La system with lower Tc, the low temperature resistivity is dominated by T2 term and fairly large magnetoresistance is observed. On the other hand, in the Nd system with higher Tc, carriers are subject to stronger scattering showing nearly T-linear resistivity and small magnetoresistance. Such strong scattering appears intimately correlated with high-Tc superconductivity in the iron-based system.

原文English
頁(從 - 到)407-409
頁數3
期刊Journal of Physics and Chemistry of Solids
72
發行號5
DOIs
出版狀態Published - 2011 5月

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 材料科學(全部)
  • 凝聚態物理學

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