Boundary-mediated electron-electron interactions in quantum point contacts
Mesoscale and Nanoscale Physics
2011-01-25 v2
Abstract
An unusual increase of the conductance with temperature is observed in clean quantum point contacts for conductances larger than 2e^2/h. At the same time a positive magnetoresistance arises at high temperatures. A model accounting for electron-electron interactions mediated by bound- aries (scattering on Friedel oscillations) qualitatively describes the observation. It is supported by numerical simulation at zero magnetic field.
Cite
@article{arxiv.0803.3503,
title = {Boundary-mediated electron-electron interactions in quantum point contacts},
author = {Vincent Thomas Francois Renard and O. A. Tkachenko and V. A. Tkachenko and T. Ota and N. Kumada and J. -C. Portal and Y. Hirayama},
journal= {arXiv preprint arXiv:0803.3503},
year = {2011}
}
Comments
To appear in Phys. Rev. Lett Updated version of Fig. 2