Generation of energy selective excitations in quantum Hall edge states

We operate an on-demand source of single electrons in high perpendicular magnetic fields up to 30T, corresponding to a filling factor below 1/3. The device extracts and emits single charges at a tunable energy from and to a two-dimensional electron gas, brought into well defined integer and fraction...

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Bibliographic Details
Published in:arXiv.org 2010-09
Main Authors: Leicht, C, Mirovsky, P, Kaestner, B, Hohls, F, Kashcheyevs, V, Kurganova, E V, Zeitler, U, Weimann, T, Pierz, K, Schumacher, H W
Format: Article
Language:English
Subjects:
Electron gas
Excitation
Single electrons
Online Access:Get full text
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Summary:We operate an on-demand source of single electrons in high perpendicular magnetic fields up to 30T, corresponding to a filling factor below 1/3. The device extracts and emits single charges at a tunable energy from and to a two-dimensional electron gas, brought into well defined integer and fractional quantum Hall (QH) states. It can therefore be used for sensitive electrical transport studies, e.g. of excitations and relaxation processes in QH edge states.
ISSN:2331-8422
DOI:10.48550/arxiv.1009.5897