TY - JOUR
T1 - Characteristic charge transport in oxygen-deficiency-controlled LnFeAsO1-y (Ln = la and Nd)
AU - Ishida, Shigeyuki
AU - Nakajima, Masamichi
AU - Tomioka, Yasuhide
AU - Ito, Toshimitsu
AU - Miyazawa, Kiichi
AU - Kito, Hijiri
AU - Lee, Chul Ho
AU - Ishikado, Motoyuki
AU - Shamoto, Shin Ichi
AU - Iyo, Akira
AU - Eisaki, Hiroshi
AU - Kojima, Kenji M.
AU - Uchida, Shin Ichi
N1 - Funding Information:
We would like to acknowledge K. Kuroki, H. Aoki, S. Ishibashi, and T. Miyake for very helpful discussions. This work was supported by Global Centers of Excellence Program and Transformative Research-Project on Iron Pnictides from the Japan Society for the Promotion of Science and from the Japan Science and Technology Agency .
PY - 2010/12
Y1 - 2010/12
N2 - 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.
AB - 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.
UR - https://www.scopus.com/pages/publications/78649708644
UR - https://www.scopus.com/pages/publications/78649708644#tab=citedBy
U2 - 10.1016/j.physc.2010.01.026
DO - 10.1016/j.physc.2010.01.026
M3 - Article
AN - SCOPUS:78649708644
SN - 0921-4534
VL - 470
SP - S324-S325
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - SUPPL.1
ER -