LaFe1-yCoyAsO1-xFx（x=0.11）在被y ~ 0.05划分的超导和非超导金属y区之间的不同输运行为
Distinct transport behaviors of LaFe1-yCoyAsO1-xFx (x=0.11) between the superconducting and nonsuperconducting metallic y regions divided by y ~ 0.05
摘要：
测量了不同y值的LaFe_（1-y）Co_yAsO_（1-x）Fx（x=0.11）多晶样品的电阻率、霍耳系数和热电功率。结果表明，在y除以边界值yc~0.05时，超导金属区和非超导金属区的输运行为有明显的区别。我们发现，在这两个区域的行为是非常相似的高Tc铜氧化物在相应的阶段。如果它们反映了强磁波动的影响，如在铜氧化物的情况下，波动的能量尺度被认为是小于高铜氧化物的1/2的因子。的电子性质和超导对称性的论点的基础上，所观察到的小速率的Tc抑制率的Co掺杂。
英文摘要：
Electrical resistivities, Hall coefficients and thermoelectric powers have been measured for polycrystalline samples of LaFe1-yCoyAsO1-xFx (x=0.11) with various values of y. The results show that there exists clear distinction of these transport behaviors between the superconducting and nonsuperconducting metallic regions of y divided by the boundary value yc~0.05. We have found that the behaviors in both regions are very similar to those of high-Tc Cu oxides in the corresponding phases. If they reflect, as in the case of Cu oxides, effects of strong magnetic fluctuations, the energy scale of the fluctuations is considered to be smaller than that of the high Cu oxides by a factor of ~1/2. Arguments on the electronic nature and superconducting symmetry are presented on the basis of the observed small rate of the Tc suppression rate by the Co doping.
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