Edge-state Blockade of Transport in Quantum Dot Arrays
Mesoscale and Nanoscale Physics
2016-03-30 v2
Abstract
We propose a transport blockade mechanism in quantum dot arrays and conducting molecules based on an interplay of Coulomb repulsion and the formation of edge states. As a model we employ a dimer chain that exhibits a topological phase transition. The connection to a strongly biased electron source and drain enables transport. We show that the related emergence of edge states is manifest in the shot noise properties as it is accompanied by a crossover from bunched electron transport to a Poissonian process. For both regions we develop a scenario that can be captured by a rate equation. The resulting analytical expressions for the Fano factor agree well with the numerical solution of a full quantum master equation.
Keywords
Cite
@article{arxiv.1511.01348,
title = {Edge-state Blockade of Transport in Quantum Dot Arrays},
author = {Mónica Benito and Michael Niklas and Gloria Platero and Sigmund Kohler},
journal= {arXiv preprint arXiv:1511.01348},
year = {2016}
}