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Theory of high temperature superconductivity in YBa2Cu3O7_δ

  • Condensed Matter Physics
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Abstract

A theory of high temperature superconductivity in YBa2Cu3O7_δ compound has been developed on the basis of the momentum pairing of electrons through the relativistic Darwin interaction. The transport behaviour of electrons is explained in terms of a mechanism of correlated electron transfer arising from the electron-phonon coupling. A model Hamiltonian has been developed to describe the superconducting properties of the system. This gives an energy gap which is higher than the BCS value. Attempts have been made to explain the absence of isotope effect, the linear dependence of specific heat, the presence of larger temperature-independent paramagnetism in the normal phase and the softening of some of the optic phonon modes observed in this system.

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  1. Advanced Centre for Research in Electronics and Department of Physics, Indian Institute of Technology, 400076, Bombay, India

    C M Srivastava

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Srivastava, C.M. Theory of high temperature superconductivity in YBa2Cu3O7_δ. Pramana - J. Phys. 32, 251–267 (1989). https://doi.org/10.1007/BF02879018

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  • DOI: https://doi.org/10.1007/BF02879018

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