Characteristic charge transport in oxygen-deficiency-controlled LnFeAsO1-y (Ln = la and Nd)

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

Research output: Contribution to journalArticlepeer-review

Abstract

We have investigated the transport properties of LnFeAsO1-y (Ln = La, Nd) over a wide range of doping. When we compare the exponent n of resistivity ρ(T)∼Tn, a marked difference is found between La and Nd system. In the La system with lower TC,ρ(T) is always dominated by a T 2 term at low temperatures, showing relatively large magnetoresistance. On the other hand, in the Nd system with higher TC,ρ(T) is linear on T with a small magnetoresistance. These results indicate that the carriers are subject to stronger scattering in NdFeAsO1-y, which might be linked to the higher TC.

Original languageEnglish
Pages (from-to)S324-S325
JournalPhysica C: Superconductivity and its applications
Volume470
Issue numberSUPPL.1
DOIs
Publication statusPublished - 2010 Dec

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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