Study of the Superconducting to Normal Transition

Jacob Szeftel (1) , Nicolas Sandeau (2) , Michel Abou Ghantous (3)

1 LPQM - Laboratoire de Photonique Quantique et Moléculaire
2 FRESNEL - Institut FRESNEL
3 AUT - American University of Technology

A model, based on classical mechanics and thermodynamics and valid for all superconductors, is devised to investigate the properties of the current-driven, superconducting to normal transition. This process is shown to be reversible. An original derivation of the BCS variational procedure is given. Two different critical temperatures are introduced. The temperature dependence of the critical current is worked out and found to agree with observation. The peculiar transport properties of high-Tc compounds in the normal state and old magnetoelastic data are also interpreted within this framework. A novel experiment is proposed to check the relevance of this analysis to high-Tc superconductivity.

Domaines: Supraconductivité [cond-mat.supr-con]

Jacob Szeftel, Nicolas Sandeau, Michel Abou Ghantous. Study of the Superconducting to Normal Transition. Journal of Superconductivity and Novel Magnetism, 2020, 33 (5), pp.1307-1316. ⟨10.1007/s10948-019-05393-1⟩. ⟨hal-02568151⟩