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Electron-phonon coupling as a mechanism for high-temperature superconductivity

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Abstract

We have solved the Eliashberg gap equations which are valid for arbitrary phonon frequency, (Ωph), electron-phonon coupling constant, (λ), and screened Coulomb interaction, (μ *). We have used values of (Ωph),λ, and (μ *) appropriate to the cuprate superconductors, and calculated the density of states, the pair potential., and the value of the gap at T=0 K. Using the linearized Eliashberg equations in the matrix representation, we have calculatedT c and 2Δ/k T c . We have found that we can account for the highT c 's in the cuprates with reasonable values forλ, μ *, and Ωph.

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Authors and Affiliations

  1. Naval Research Laboratory, 20375, Washington, DC

    W. W. Fuller-Mora & S. A. Wolf

  2. University of California at Berkeley, 94720, Berkeley, California

    V. Z. Kresin

Authors
  1. W. W. Fuller-Mora
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  2. S. A. Wolf
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  3. V. Z. Kresin
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Fuller-Mora, W.W., Wolf, S.A. & Kresin, V.Z. Electron-phonon coupling as a mechanism for high-temperature superconductivity. J Supercond 7, 543–545 (1994). https://doi.org/10.1007/BF00728456

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  • DOI: https://doi.org/10.1007/BF00728456

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