Four-terminal resistance of an interacting quantum wire with weakly invasive contacts
Mesoscale and Nanoscale Physics
2011-11-22 v3
Abstract
We analyze the behavior of the four-terminal resistance, relative to the two-terminal resistance of an interacting quantum wire with an impurity, taking into account the invasiveness of the voltage probes. We consider a one-dimensional Luttinger model of spinless fermions for the wire. We treat the coupling to the voltage probes perturbatively, within the framework of non-equilibrium Green function techniques. Our investigation unveils the combined effect of impurities, electron-electron interactions and invasiveness of the probes on the possible occurrence of negative resistance.
Keywords
Cite
@article{arxiv.1102.1371,
title = {Four-terminal resistance of an interacting quantum wire with weakly invasive contacts},
author = {Hugo Aita and Liliana Arrachea and Carlos Naón},
journal= {arXiv preprint arXiv:1102.1371},
year = {2011}
}
Comments
10 pages, 7 figures