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Ion migration in high-T c superconductors and the nature of the conducting state ind-wave superconductors

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Abstract

The available experimental data on the ion migration in superconducting Y-123 and Bi-2223 films under the effect of high transport currents are summarized. Irrespective of structural perfection, electrostimulated diffusion of heavy ions and oxygen gives rise to the formation of new, stable phases and partial degradation of superconductivity. A model taking into account the proximity of the superconducting, structural, and magnetic transitions in high-T c materials is used to explain ion migration as the response of the system of ions and coherentd electrons to the external electric field. Thed-wave symmetry superconducting state is shown to possess combined, rotational + translational invariance, rotational symmetry being due to the motion of electrons in the curl field of the ions, playing the role of topological defects.

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Authors and Affiliations

  1. Institute of General Physics, Russian Academy of Sciences, ul. Vavilova 38, 117942, Moscow, Russia

    G. N. Mikhailova, A. M. Prokhorov & A. V. Troitskii

  2. Lebedev Institute of Physics, Russian Academy of Sciences, Leninskii pr. 53, 117924, Moscow, Russia

    L. Yu. Shchurova

Authors
  1. G. N. Mikhailova
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  2. A. M. Prokhorov
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  3. A. V. Troitskii
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  4. L. Yu. Shchurova
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Mikhailova, G.N., Prokhorov, A.M., Troitskii, A.V. et al. Ion migration in high-T c superconductors and the nature of the conducting state ind-wave superconductors. Inorg Mater 36, 807–815 (2000). https://doi.org/10.1007/BF02758602

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  • DOI: https://doi.org/10.1007/BF02758602

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