## Abstract

The authors calculate the depression of T_{c} 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 T_{c} gave a large reduction in T_{c}. In this work they find T_{c} numerically from the Eliashberg equations. They find that the reduction of T_{c} 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 - 1986 |

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