Counting statistics of single electron transport in bilayer graphene quantum dots
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Date
2023-01-24
Authors
Garreis, Rebekka
Gerber, Jonas Daniel
Stará, Veronika
Tong, Chuyao
Gold, Carolin
Röösli, Marc
Watanabe, Kenji
Taniguchi, Takashi
Ensslin, Klaus
Ihn, Thomas
ORCID
0000-0003-4818-4366Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
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Abstract
We measured telegraph noise of current fluctuations in an electrostatically defined quantum dot in bilayer graphene by real-time detection of single electron tunneling with capacitively coupled neighboring quantum dot. Suppresion of the second and third cumulant (related to shot noise) in a tunable graphene quantum dot is demonstrated experimentally. With this method we demonstrate the ability to measure very low current and noise levels. Furthermore, we use this method to investigate the first spin excited state, an essential prerequisite to emasure spin relaxation
Description
Keywords
Electron transport properties, electron tunneling, excited states, graphene, quantum chemistry, semiconductor quantum dots, shot noise, bialyer grpahene, capacitively coupled, counting statistics, cumulants, current fluctuations, real-time detection, single electron tunneling, single-electron transport, telegraph noise, tunables
Citation
Physical Review Research. 2023, vol. 5, issue 1, 7 p.
https://link.aps.org/doi/10.1103/PhysRevResearch.5.013042
https://link.aps.org/doi/10.1103/PhysRevResearch.5.013042
Document type
Peer-reviewed
Document version
Published version
Date of access to the full text
Language of document
en