Electron transport in coupled chains of interacting fermions with impurities
Strongly Correlated Electrons
2009-10-30 v1
Abstract
We study the low-temperature transport of a doped two-chain ladder system of interacting fermions in the presence of a barrier or of a low concentration of impurities. Above a certain value of the interaction, the conductance is suppressed, like for a single chain, despite the presence of dominant superconducting correlations. There is, however, a region of repulsive interaction where perfect transmission across the barrier occurs unlike the single-chain case. We provide a possible explanation for the temperature maximum of the resistivity in the normal state of \srca.
Keywords
Cite
@article{arxiv.cond-mat/9708152,
title = {Electron transport in coupled chains of interacting fermions with impurities},
author = {E. Arrigoni and B. Brendel and W. Hanke},
journal= {arXiv preprint arXiv:cond-mat/9708152},
year = {2009}
}
Comments
4 pages, 2 figures, to be published in Phys. Rev. Lett