Mapping an electron wave function by a local electron scattering probe
Mesoscale and Nanoscale Physics
2015-12-09 v1
Abstract
A technique is developed which allows for the detailed mapping of the electronic wave function in two-dimensional electron gases with low-temperature mobilities up to 15E6 cm^2/Vs. Thin ("delta") layers of aluminium are placed into the regions where the electrons reside. This causes electron scattering which depends very locally on the amplitude of the electron wave function at the position of the Al "delta"-layer. By changing the distance of this layer from the interface we map the shape of the wave function perpendicular to the interface. Despite having a profound effect on the electron mobiliy, the "delta"-layers do not cause a widening of the quantum Hall plateaus.
Cite
@article{arxiv.1510.07981,
title = {Mapping an electron wave function by a local electron scattering probe},
author = {Christian Reichl and Werner Dietsche and Thomas Tschirky and Timo Hyart and Werner Wegscheider},
journal= {arXiv preprint arXiv:1510.07981},
year = {2015}
}
Comments
15 pages, five figures