Transport inefficiency in branched-out mesoscopic networks: an analog of the Braess paradox.

@article{Pala2012TransportII,
title={Transport inefficiency in branched-out mesoscopic networks: an analog of the Braess paradox.},
author={M. Pala and S. Baltazar and P. Liu and H. Sellier and B. Hackens and F. Martins and V. Bayot and X. Wallart and L. Desplanque and S. Huant},
journal={Physical review letters},
year={2012},
volume={108 7},
pages={
076802
}
}

We present evidence for a counterintuitive behavior of semiconductor mesoscopic networks that is the analog of the Braess paradox encountered in classical networks. A numerical simulation of quantum transport in a two-branch mesoscopic network reveals that adding a third branch can paradoxically induce transport inefficiency that manifests itself in a sizable conductance drop of the network. A scanning-probe experiment using a biased tip to modulate the transmission of one branch in the network… Expand