Abstract
Samples of Bi2201 single crystals with various carrier concentrations from the overdoped to the underdoped region are obtained. The normal-state resistivity and thermoelectric power (TEP) for these crystals are measured. The resistivity measurement shows that a MI transition takes place with decreasing oxygen content by heat treatment. An interesting phenomenon in thepT curves is that the resistivity for the sample treated under low oxygen partial pressure deviates downward from T-linearity at 160K. The corresponding anomaly in TEP has also been observed, i.e., the TEP exhibits a strong enhancement at 160 K, which is suggested to be associated with the opening of a spin gap. The scattering of spin fluctuation as the origin of the T-linear resistivity in the Bi2201 system is proposed and discussed in this paper.
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Gaojie, X., Zhiqiang, M., Wenbin, W. et al. Spin Scattering Mechanism as the Origin of the T-linear Resistivity in the Bi2201 System. J Supercond 10, 555–558 (1997). https://doi.org/10.1007/BF02767694
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DOI: https://doi.org/10.1007/BF02767694