Strong Coupling Theory of Superconductivity
Abstract
The electronic properties of correlated metals with a strong electron-phonon coupling may be understood in terms of a combination of Landau's Fermi-liquid theory and the strong-coupling theory of Migdal and Eliashberg. In these lecture notes we discuss the microscopic foundations of this phenomenological Fermi-liquid model of correlated, strong-coupling metals. We formulate the basic equations of the model, which are quasiclassical transport equations that describe both equilibrium and non-equilibrium phenomena for the normal and superconducting states of a metal. Our emphasis is on superconductors close to equilibrium, for which we derive the general linear response theory. As an application we calculate the dynamical conductivity of strong-coupling superconductors.
Cite
@article{arxiv.1809.05264,
title = {Strong Coupling Theory of Superconductivity},
author = {D. Rainer and J. A. Sauls},
journal= {arXiv preprint arXiv:1809.05264},
year = {2018}
}
Comments
24 pages, 6 figures