Electron-phonon interactions in transition metals
- 15 June 1979
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 19 (12), 6130-6141
- https://doi.org/10.1103/physrevb.19.6130
Abstract
The problem of the electron-phonon interaction in transition metals is approached from the point of view that nonorthogonal tight-binding representations of the -band electronic structure are very appropriate in such materials. Expressions for the electron-phonon matrix elements using this representation are derived. The quantitative validity of the method is demonstrated by calculating , the Fermi-surface average of the electron-phonon coupling constant for bcc transition metals and alloys. The variation of in these materials is understood physically as arising from the variation of the average Fermi velocity and of the bond order.
Keywords
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