Pseudogaps in an Incoherent Metal
Strongly Correlated Electrons
2009-11-07 v2
Abstract
How are the properties of a metal changed by strong inelastic scattering? We investigate this question within the two-dimensional t-J model using extended dynamical mean field theory and a generalized non-crossing approximation. Short-ranged antiferromagnetic fluctuations lead to a strongly incoherent single particle dynamics, large entropy and resistance. Close to the Mott transition at low hole doping a pseudogap opens, accompanied by a drop in resistivity and an increase in the Hall constant for both lower temperatures and doping levels. The behavior obtained bears surprising similarity to properties of the cuprates.
Cite
@article{arxiv.cond-mat/0205347,
title = {Pseudogaps in an Incoherent Metal},
author = {K. Haule and A. Rosch and J. Kroha and P. Wölfle},
journal= {arXiv preprint arXiv:cond-mat/0205347},
year = {2009}
}
Comments
4 pages, 4 figures, LaTex, relation to work by Parcollet and Georges discussed and reference added