The anomalous thermoelectric power of the La doped Bi-2201 phase

Xu Gaojie, Mao Zhiqiang, Wang Ruiping, Tian Mingliang, Zhang Yuheng

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Samples of the Bi1.9Sr1.6La0.4CuOy system with different oxygen contents have Obtained by annealing the as-grown samples at different and oxygen partial pressures. The results of resistivity and thermoelectric power (TEP) measurements of these samples are reported here. Some anomalous phenomena in transport for the underdoped samples of Bi1.9Sr1.6La0.4CuOy were observed, i.e., below a characteristic temperature, the TEP exhibits a significant enhancement and the temperature dependence of the resistivity deviates downward from linearity. These results imply that a ,pu. gap exists in the La doped Bi-2201 system By comparison with the results reported previously, we suggest that the microstructural characteristics are another important factor in determining the spin excitation spectrum.

Original languageEnglish (US)
Pages (from-to)1261-1265
Number of pages5
JournalJournal of Physics Condensed Matter
Issue number6
StatePublished - Feb 10 1997

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics


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