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Superconductivity in amorphous Bi and Ga

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Abstract

The electron-phonon α2(ω)F(ω) has been measured by Chenet al. in films of amorphous Bi and Ga. This was accomplished by inversion of low-temperature quasiparticle tunneling data. From α2(ω)F(ω), the phonon renormalization of the electronic effective mass was calculated and was found to be considerably greater than it is in the case of the well-known strong-coupling superconductors Pb and Hg. These amorphous materials should, therefore, be ideal for a study of strong-coupling effects, i.e., deviations from BCS laws. In this paper, we present results of a theoretical study of select thermodynamic properties of these materials based on numerical solutions, at finite temperatures, of the Eliashberg equations.

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References

  1. W. L. McMillan and J. M. Rowell, inSuperconductivity, R. D. Parks, ed. (Marcel Dekker, New York, 1969), p. 561.

    Google Scholar 

  2. J. R. Schrieffer, D. J. Scalapino, and J. W. Wilkins,Phys. Rev. Letters 10, 336 (1963).

    Google Scholar 

  3. W. L. McMillan and J. M. Rowell,Phys. Rev. Letters 14, 180 (1965).

    Google Scholar 

  4. D. J. Scalapino, inSuperconductivity, R. D. Parks, ed. (Marcel Dekker, New York, 1969), p. 449.

    Google Scholar 

  5. T. T. Chen, J. T. Chen, J. D. Leslie, and H. J. T. Smith,Phys. Rev. Letters 22, 526 (1969).

    Google Scholar 

  6. G. M. Eliashberg,Zh. Eksperim. i Teor. Fiz. 43, 1005 (1962) [English transl.,Soviet Phys.—JETP 16, 780 (1963)].

    Google Scholar 

  7. P. Vashishta and J. P. Carbotte,Solid State Commun. 8, 1661 (1970).

    Google Scholar 

  8. V. Ambegaokar, inMany-Body Physics, C. DeWitt and R. Balian, eds. (Gordon and Breach, New York, 1968), p. 299.

    Google Scholar 

  9. J. D. Leslie, J. T. Chen, and T. T. Chen,Can. J. Phys. 48, 2783 (1970).

    Google Scholar 

  10. R. C. Dynes, J. P. Carbotte, and E. J. Woll,Solid State Commun. 6, 101 (1968).

    Google Scholar 

  11. R. C. Dynes, J. P. Carbotte, D. W. Taylor, and C. K. Campbell,Phys. Rev. 178, 713 (1969).

    Google Scholar 

  12. J. R. Schrieffer,Theory of Superconductivity (W. A. Benjamin, New York, 1964).

    Google Scholar 

  13. T. A. Fulton and D. E. McCumber,Phys. Rev. 175, 585 (1968).

    Google Scholar 

  14. J. Bardeen and M. Stephen,Phys. Rev. 136, A1485 (1969).

    Google Scholar 

  15. C. S. Lim, J. D. Leslie, H. J. T. Smith, P. Vashishta, and J. P. Carbotte,Phys. Rev. B2, 1651 (1970).

    Google Scholar 

  16. P. Vashishta and J. P. Carbotte,Solid State Commun. 11, 539 (1972).

    Google Scholar 

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Authors and Affiliations

  1. Argonne National Laboratory, Argonne, Illinois

    P. Vashishta

  2. Physics Department, McMaster University, Hamilton, Ontario, Canada

    J. P. Carbotte

Authors
  1. P. Vashishta
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  2. J. P. Carbotte
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Work performed under the auspices of the U.S. Atomic Energy Commission, and supported in part by the National Research Council of Canada.

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Vashishta, P., Carbotte, J.P. Superconductivity in amorphous Bi and Ga. J Low Temp Phys 10, 551–571 (1973). https://doi.org/10.1007/BF00655452

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