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Thermal Stability of Superconductors

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Abstract

A stability criterion is worked out for the superconducting phase. The validity of a prerequisite, established previously for persistent currents, is thereby confirmed. Temperature dependence is given for the specific heat and concentration of superconducting electrons in the vicinity of the critical temperature Tc. The isotope effect, mediated by electron-phonon interaction and hyperfine coupling, is analyzed. Several experiments, intended at validating this analysis, are presented, including one giving access to the specific heat of high-Tc compounds.

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Authors and Affiliations

  1. ENS Cachan, LPQM, 61 avenue du Président Wilson, 94230, Cachan, France

    Jacob Szeftel

  2. CNRS, Centrale Marseille, Institut Fresnel, Aix Marseille Univ, F-13013, Marseille, France

    Nicolas Sandeau

  3. American University of Technology, AUT Halat, Highway, Lebanon

    Michel Abou Ghantous

  4. Ain-Shams University, Cairo, Egypt

    Muhammad El-Saba

Authors
  1. Jacob Szeftel
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  2. Nicolas Sandeau
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  3. Michel Abou Ghantous
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  4. Muhammad El-Saba
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Correspondence to Jacob Szeftel.

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Szeftel, J., Sandeau, N., Ghantous, M.A. et al. Thermal Stability of Superconductors. J Supercond Nov Magn 34, 37–42 (2021). https://doi.org/10.1007/s10948-020-05743-4

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  • DOI: https://doi.org/10.1007/s10948-020-05743-4

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