Abstract
The authors calculate the depression of Tc caused by the effect of a short mean free path on the Coulomb repulsion, for the special case of a very anisotropic superconductor. Specifically, they consider the linear chain model for A15 superconductors with a large difference between the in-chain and inter-chain scattering rates. Previous work based on the McMillan equation for Tc gave a large reduction in Tc. In this work they find Tc numerically from the Eliashberg equations. They find that the reduction of Tc due to this effect is about 25% to 30%, which is considerably less than observed experimentally. The effective Coulomb term is retarded, and as a result is frequency dependent. It is affected by the disorder mainly at small frequencies ( approximately 10 meV).
Original language | English |
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Article number | 021 |
Pages (from-to) | 1545-1553 |
Number of pages | 9 |
Journal | Journal of Physics F: Metal Physics |
Volume | 16 |
Issue number | 10 |
DOIs | |
State | Published - 1 Dec 1986 |
Externally published | Yes |
ASJC Scopus subject areas
- General Engineering
- Physics and Astronomy (miscellaneous)
- Metals and Alloys