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Electronic specific heat of thallium(2)-barium(2)-copper-oxygen(6+delta) from 2 to 300 K for delta between 0 and 0.1.

Author(s) : WADE J. M., LORAM J. W., MIRZA K. A., COOPER J. R., TALLON J. L.

Type of article: Article

Summary

Anomalies at critical temperature are seen for all superconducting compositions measured, and the results are consistent with a temperature- and delta-independent normal-state electronic term. The samples with the larger critical temperatures exhibit strong fluctuations in their specific heat, typical of a highly anisotropic 2D superconductor, but there is some evidence that these fluctuations become weaker at critical temperature falls, consistent with an increase in the coherence length on hole doping. At temperatures below 5 K, an upturn in the data is observed which appears to increase in magnitude as critical temperature falls, correlating with the increase in the Curie term of published susceptibility data.

Details

  • Original title: Electronic specific heat of thallium(2)-barium(2)-copper-oxygen(6+delta) from 2 to 300 K for delta between 0 and 0.1.
  • Record ID : 1995-1380
  • Languages: English
  • Source: J. Supercond. - vol. 7 - n. 1
  • Publication date: 1994/02
  • Document available for consultation in the library of the IIR headquarters only.

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