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A pseudopotential approach to the superconducting state properties of Cu-Zr metallic glasses

Superconductor Science and Technology, ISSN: 0953-2048, Vol: 17, Issue: 3, Page: 474-478
2004
  • 25
    Citations
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  • 2
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Metrics Details

  • Citations
    25
    • Citation Indexes
      25
  • Captures
    2

Article Description

The superconducting state properties of the nine metallic glasses of CuZr system have been investigated in the BCS-Eliashberg-McMillan framework by extending this theory to the binary metallic glasses. The values of superconducting state parameters, namely, the electron-phonon coupling strength (λ), Coulomb pseudopotential (μ*), transition temperature (T), isotope effect exponent (α) and interaction strength (NV) of Cu-Zr metallic glasses in the range 0.40 ≤ c ≤ 0.75 of Zr in Cu have been worked out using Ashcroft's potential along with the RPA form of the dielectric screening. The present results for T show an excellent agreement with the experimental data. The values of T, α and NV are found to decrease continuously with increase of the Cu concentration in Zr, showing that Zr rich Cu-Zr glasses are favoured materials for superconductivity.

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