Single-Particle Excitations in a Two-Dimensional Strong-Coupling Superconductor
Superconductivity
2007-05-23 v1 Strongly Correlated Electrons
Abstract
We present calculations of the single-particle excitation spectrum for a 2D strong-coupling superconductor in a conserving approximation. Spectral weight at low frequency is substantially reduced as the superconducting transition is approached from the normal state. The suppression of low-energy excitations is a consequence of Cooper-pair fluctuations that are described self-consistently in the fluctuation exchange approximation. The static and uniform electromagnetic response provides a measure of the super fluid density and a fully self-consistent indication of the superconducting transition temperature.
Cite
@article{arxiv.cond-mat/9808267,
title = {Single-Particle Excitations in a Two-Dimensional Strong-Coupling Superconductor},
author = {D. W. Hess and J. J. Deisz and J. W. Serene},
journal= {arXiv preprint arXiv:cond-mat/9808267},
year = {2007}
}
Comments
10 pages and 3 figures (1 color). To appear in Phil. Mag. Lett