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. Mehr anzeigen
Persistenter Link
https://doi.org/10.3929/ethz-b-000278013Publikationsstatus
publishedExterne Links
Zeitschrift / Serie
New Journal of PhysicsBand
Seiten / Artikelnummer
Verlag
IOP PublishingThema
quantum transport; scanning gate microscopy; branched electron flow; mesoscopic; local perturbation; trajectory simulationOrganisationseinheit
03833 - Wegscheider, Werner / Wegscheider, Werner
03439 - Ensslin, Klaus / Ensslin, Klaus
08835 - Ihn, Thomas (Tit.-Prof.)
02205 - FIRST-Lab / FIRST Center for Micro- and Nanoscience