Stable Branched Electron Flow

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.

arXiv commentAccepted for publication in New Journal of Physics

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Cited by in corpus (8)

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• Deep neural networks for inverse problems in mesoscopic physics: Characterization of the disorder configuration from quantum transport properties
• Thermoelectric Scanning Gate Interferometry on a Quantum Point Contact
• Signatures of folded branches in the scanning gate microscopy of ballistic electronic cavities
• Reversed Photoeffect in Transparent Graphene Nanocapacitors