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Effect of heating temperature on excess conductivity and superconducting fluctuations of (Tl0.6Pb0.4)BaSrCaCu2O7

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Abstract

The Tl(Ba/Sr)2CaCu2O7 (Tl-1212) material has a relatively high superconducting critical temperature. With proper elemental substitutions the Ba and Sr only bearing Tl-1212 phase can be readily prepared. In this work we have combined Ba:Sr in 1:1 ratio and determined the role that heating temperature plays on the fluctuations and excess conductivity of (Tl0.6Pb0.4)BaSrCaCu2O7 superconductor. The superconductors were prepared under oxygen flow at 850 to 1000 °C. The Aslamazov-Larkin model was utilized to calculated the dimensionality of fluctuation induced conductivity, λ in the superconductor. The coherence length ξc(0), Josephson coupling J, and anisotropy γ = (ξab(0)/ξc(0)) were determined by the Lawrence-Doniach model. Excess conductivity analyses indicated that as the heating temperature was increased the two-dimensional to three-dimensional conductivity transition temperature decreased. The shortest coherence length, ξc(0) = 0.868 Å, lowest Josephson coupling, and highest anisotropy (γ = 11.516) were exhibited by the sample heated at 1000 °C which also showed the highest zero-resistance–temperature, Tc-zero. These results can be useful in the search for high temperature superconductivity in the cuprates.

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Data from the work shall be provided upon reasonable request.

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Acknowledgements

The Ministry of Higher Education of Malaysia supported this research under Grant No. FRGS/1/2020/STG07/UKM/01/1.

Funding

Ministry of Higher Education, Malaysia, Grant No. (FRGS/1/2020/STG07/UKM/01/1).

Author information

Authors and Affiliations

  1. Department of Physics, Faculty of Applied Sciences, Thamar University, 87246, Dhamar, Yemen

    Annas Al-Sharabi

  2. Department of Communication Technology, Telecommunication Research Centre, Tehran, Iran

    M. G. Ranjbar & Vahid Yazdanian

  3. Department of Applied Physics, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia

    R. Abd-Shukor

Authors
  1. Annas Al-Sharabi
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  2. M. G. Ranjbar
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  3. Vahid Yazdanian
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  4. R. Abd-Shukor
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Contributions

MGR and VY performed the experiments and initial data analysis. AAS performed the excess conductivity and fluctuation analyses. RAS contributed to the experimental procedure and writing the paper.

Corresponding author

Correspondence to R. Abd-Shukor.

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Al-Sharabi, A., Ranjbar, M.G., Yazdanian, V. et al. Effect of heating temperature on excess conductivity and superconducting fluctuations of (Tl0.6Pb0.4)BaSrCaCu2O7. J Mater Sci: Mater Electron 33, 10671–10676 (2022). https://doi.org/10.1007/s10854-022-08050-x

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  • DOI: https://doi.org/10.1007/s10854-022-08050-x

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