Exchange Interaction Effects on the Conductance of Quantum Wires
Mesoscale and Nanoscale Physics
2009-11-10 v1
Abstract
The effect of exchange interaction on the two-terminal conductance of fully ballistic samples is studied using a many-particle wave packet formalism. The approach shows that the puzzling nonuniversal conductance quantization can be explained as a fermion exchange interaction effect. The Landauer conductance step Go is obtained when two-fermion interaction is considered. Reductions of Go are due to a many-particle exchange interaction effect. For ballistic GaAs/AlGaAs quantum wires longer than 1 um, a conductance step reduction is obtained in agreement with experimental results.
Keywords
Cite
@article{arxiv.cond-mat/0302419,
title = {Exchange Interaction Effects on the Conductance of Quantum Wires},
author = {Xavier Oriols},
journal= {arXiv preprint arXiv:cond-mat/0302419},
year = {2009}
}
Comments
15 pages and 4 figures