Pseudogap Phenomena in the BCS Pairing Model
Superconductivity
2009-11-07 v2 Strongly Correlated Electrons
Abstract
We investigate pseudo-gap phenomena realized in the BCS pairing model with a long but finite interaction range. We calculate the single-particle self-energy in all order exactly in the temperature range where the superconducting fluctuation propagator is Gaussian-like. It is found that vertex corrections to the self-energy which are discarded in the previous studies are crucially important for the pseudo-gap of the single-particle density of states in higher order calculations.
Cite
@article{arxiv.cond-mat/0201380,
title = {Pseudogap Phenomena in the BCS Pairing Model},
author = {Satoshi Fujimoto},
journal= {arXiv preprint arXiv:cond-mat/0201380},
year = {2009}
}
Comments
7 pages, 3 figures, references are added, to appear in J. Phys. Soc. Jpn. vol.71, no.5 (2002)