The Electron—Phonon Enhancement Factor for Some Transition Metals

  • G. S. Knapp
  • R. W. Jones
  • B. A. Loomis


We have shown in a previous paper1 how the McMillan2 electron-phonon mass enhancement factor λ can be determined from specific heat data. New specific heat measurements for niobium and tantalum that allow λ to be determined for these materials are reported in the present paper. The addition of these results to those previously reported1 permits verification of the McMillan theory2 in a large number of transition metals. For scandium, yttrium, niobium, vanadium, and tantalum our results for λ agree quite well with the values obtained in the Bennemann and Garland3 extension of the McMillan theory. For platinum and palladium the agreement is satisfactory if strong spin-fluctuation effects are taken into account.


Band Structure Calculation Specific Heat Measurement Electronic Specific Heat Specific Heat Data Anharmonic Contribution 
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  1. 1.
    G.S. Knapp and R.W. Jones, Phys. Rev. B (1972).Google Scholar
  2. 2.
    W.L. McMillan, Phys. Rev. 167, 331 (1968).ADSCrossRefGoogle Scholar
  3. 3.
    K.H. Bennemann and J.W. Garland, in Superconductivity in d- and f- Bond Metals (AIP Conf. Proc. No. 4), American Institute of Physics, New York (1972), p. 103.Google Scholar
  4. 4.
    R.W. Jones, G.S. Knapp, and B.W. Veal (to be published).Google Scholar
  5. 5.
    F.M. Jaeger and W.A. Veenstra, Rec. Tray. Chim. 53, 677 (1934).CrossRefGoogle Scholar
  6. 6.
    K.F. Sterrett, Ph.D. Thesis, Univ. of Pittsburgh, Univ. Microfilms Publ. 22865 (1957).Google Scholar
  7. 7.
    A. Magnus and H. Holzmann, Ann. Physik Chem. (Frankfurt) 16, 194 (1958).CrossRefGoogle Scholar
  8. 8.
    G. Grimvall, J. Phys. Chem. Solids 29, 1221 (1968).ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1974

Authors and Affiliations

  • G. S. Knapp
    • 1
  • R. W. Jones
    • 1
  • B. A. Loomis
    • 1
  1. 1.Argonne National LaboratoryArgonneUSA

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