Stable Branched Electron Flow
Mesoscale and Nanoscale Physics
2018-07-12 v1
Abstract
The pattern of branched electron flow revealed by scanning gate microscopy shows the distribution of ballistic electron trajectories. The details of the pattern are determined by the correlated potential of remote dopants with an amplitude far below the Fermi energy. We find that the pattern persists even if the electron density is significantly reduced such that the change in Fermi energy exceeds the background potential amplitude. The branch pattern is robust against changes in charge carrier density, but not against changes in the background potential caused by additional illumination of the sample.
Cite
@article{arxiv.1807.02792,
title = {Stable Branched Electron Flow},
author = {B A Braem and C Gold and S Hennel and M Röösli and M Berl and W Dietsche and W Wegscheider and K. Ensslin and T Ihn},
journal= {arXiv preprint arXiv:1807.02792},
year = {2018}
}
Comments
Accepted for publication in New Journal of Physics