FeAsO
( = La and Nd) obtained from charge transport experimentsIshida, Shigeyuki*; Nakajima, Masamichi*; Tomioka, Yasuhide*; Ito, Toshimitsu*; Miyazawa, Kiichi*; Kito, Hijiri*; Lee, C.-H.*; Ishikado, Motoyuki; Shamoto, Shinichi 
; Iyo, Akira*; Eisaki, Hiroshi*; Kojima, Kenji*; Uchida, Shinichi*
Characteristic normal-state charge transport is found in the oxygen-deficient iron-arsenides FeAsO (: La and Nd) with the highest 
's among known Fe-based superconductors. The effect of "doping" in this system is mainly on the carrier scattering, quite distinct from that in high- cuprates. In the superconducting regime of the La system with maximum = 28 K, the low-temperature resistivity is dominated by a 
term. On the other hand, in the Nd system with higher than 40 K, the carriers are subject to stronger scattering showing -linear resistivity and small magnetoresistance. Such strong scattering appears crucial for high- superconductivity in the iron-based system.
Language |
: | English |
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Volume |
: | 81 |
Number |
: | 9 |
Pages |
: | p.094515_1 - 094515_6 |
Publication Year/Month |
: | 2010/03 |
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: |
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Keywords |
: | no keyword |
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Percentile:64.44 Category:Materials Science, Multidisciplinary |
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