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EVALUATION OF THE ELECTRON-PHONON INTERACTION AND TRANSITION TEMPERATURE IN THE OXIDE SUPERCONDUCTORS.

Author(s) : PAPACONSTANTOPOULOS D. A.

Type of article: Article

Summary

THE ALLEN-DYNES EQUATION APPLICABLE TO THE OXIDE SUPERCONDUCTORS IS STUDIED, WHICH SHOWS THAT FOR MODERATE VALUES OF THE ELECTRON-PHONON COUPLING CONSTANT THE SUPERCONDUCTING TRANSITION TEMPERATURE IS FOUND IN THE RANGE OF 100 K. THIS RESULT IS BASED ON AN APPROXIMATE EVALUATION OF LARGE VALUES OF THE MCMILLAN-HOPFIELD PARAMETER AND EVIDENCE FROM FROZEN-PHONON CALCULATIONS THAT STRONG IONIC CHARACTER IN THE COPPER OXIDE SUPERCONDUCTORS INVALIDATES THE RIGID MUFFIN-TIN APPROXIMATION.

Details

  • Original title: EVALUATION OF THE ELECTRON-PHONON INTERACTION AND TRANSITION TEMPERATURE IN THE OXIDE SUPERCONDUCTORS.
  • Record ID : 1990-0482
  • Languages: English
  • Source: J. Supercond. - vol. 2 - n. 2
  • Publication date: 1989/06
  • Document available for consultation in the library of the IIR headquarters only.

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