Electron-phonon matrix element: Friedel sum rule and modified rigid-muffin-tin approximation
- 1 October 1985
- journal article
- Published by IOP Publishing in Journal of Physics F: Metal Physics
- Vol. 15 (10) , 2145-2156
- https://doi.org/10.1088/0305-4608/15/10/010
Abstract
A rigid shift of a single muffin-tin potential does not generally satisfy the Friedel sum rule. An additional scattering potential of a simple form, which basically comes from the screening effect is taken into account so that the whole scattering effect satisfies the Friedel sum rule. Some problems of the rigid-muffin-tin approximation and the modifications arising from the present method are discussed with some example calculations for Al, Cu, Nb and Mo.Keywords
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