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Resistivity and thermoelectric power of Bi2Sr2Ca−xPrxCu2Oy system |
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| Authors: | X. H. Chen T. F. Li M. Yu K. Q. Ruan C. Y. Wang L. Z. Cao |
| Affiliation: | Structural Research Laboratory, Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, P.R. China |
| Abstract: | Samples of Bi2Sr2Ca1−xPrxCu2Oy have been characterized by resistivity and thermoelectric power measurements. All metallic samples show superconductivity with a maximum Tc = 90 K at X = 0.2. The sample of x = 0.6 shows a crossover from hopping conduction at low temperature above Tc to metallic conduction at high temperature. For the metallic samples below x = 0.6, the results of thermoelectric power are well fitted by both of a phenomenological band spectrum model and the Nagaosa and Lee model. |
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