Long-lived circulating currents in strongly correlated nanorings
Mesoscale and Nanoscale Physics
2019-09-25 v2 Strongly Correlated Electrons
Abstract
We study the time evolving currents flowing in an interacting, ring-shaped nanostructure after a bias voltage has been switched on. The source-to-drain current exhibits the expected relaxation towards its quasi-static equilibrium value at a rate reflecting the lead-induced broadening of the ring states. In contrast, the current circulating within the ring decays with a different rate , which is a rapidly decaying function of the interaction strength and thus can take values orders of magnitude below . This implies the existence of a regime in which the nanostructure is far from equilibrium even though the transmitted current is already stationary. We discuss experimental setups to observe the long-lived ring transients.
Keywords
Cite
@article{arxiv.1903.01721,
title = {Long-lived circulating currents in strongly correlated nanorings},
author = {B. M. Schoenauer and N. M. Gergs and P. Schmitteckert and F. Evers and D. Schuricht},
journal= {arXiv preprint arXiv:1903.01721},
year = {2019}
}