Suppression of shot noise in a spin–orbit coupled quantum dot

We study theoretically the transport properties of electrons in a quantum dot system with spin–orbit coupling. By using the quantum master equation approach, the shot noise and skewness of the transport electrons are calculated. We obtain super-Poisson noise behaviour by investigating the full count...

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Detalles Bibliográficos
Autores principales: Wang, Zhimei, Mao, Lijun, Xue, Naitao, Lu, Wenting
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society 2021
Materias:
Physics and Biophysics
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8059519/
https://www.ncbi.nlm.nih.gov/pubmed/33996114
http://dx.doi.org/10.1098/rsos.201432
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author Wang, Zhimei
Mao, Lijun
Xue, Naitao
Lu, Wenting
author_facet Wang, Zhimei
Mao, Lijun
Xue, Naitao
Lu, Wenting
author_sort Wang, Zhimei
collection PubMed
description We study theoretically the transport properties of electrons in a quantum dot system with spin–orbit coupling. By using the quantum master equation approach, the shot noise and skewness of the transport electrons are calculated. We obtain super-Poisson noise behaviour by investigating the full counting statistics of the transport system. We discover super-Poisson behaviour is more obvious with the spin polarization increasing. More importantly, we discover the suppression of shot noise induced by spin–orbit coupling. The value of shot noise is gradually decreasing when spin–orbit coupling strength increases.
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spelling pubmed-80595192021-05-14 Suppression of shot noise in a spin–orbit coupled quantum dot Wang, Zhimei Mao, Lijun Xue, Naitao Lu, Wenting R Soc Open Sci Physics and Biophysics We study theoretically the transport properties of electrons in a quantum dot system with spin–orbit coupling. By using the quantum master equation approach, the shot noise and skewness of the transport electrons are calculated. We obtain super-Poisson noise behaviour by investigating the full counting statistics of the transport system. We discover super-Poisson behaviour is more obvious with the spin polarization increasing. More importantly, we discover the suppression of shot noise induced by spin–orbit coupling. The value of shot noise is gradually decreasing when spin–orbit coupling strength increases. The Royal Society 2021-04-14 /pmc/articles/PMC8059519/ /pubmed/33996114 http://dx.doi.org/10.1098/rsos.201432 Text en © 2021 The Authors. https://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited.
spellingShingle Physics and Biophysics
Wang, Zhimei
Mao, Lijun
Xue, Naitao
Lu, Wenting
Suppression of shot noise in a spin–orbit coupled quantum dot
title Suppression of shot noise in a spin–orbit coupled quantum dot
title_full Suppression of shot noise in a spin–orbit coupled quantum dot
title_fullStr Suppression of shot noise in a spin–orbit coupled quantum dot
title_full_unstemmed Suppression of shot noise in a spin–orbit coupled quantum dot
title_short Suppression of shot noise in a spin–orbit coupled quantum dot
title_sort suppression of shot noise in a spin–orbit coupled quantum dot
topic Physics and Biophysics
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8059519/
https://www.ncbi.nlm.nih.gov/pubmed/33996114
http://dx.doi.org/10.1098/rsos.201432
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AT maolijun suppressionofshotnoiseinaspinorbitcoupledquantumdot
AT xuenaitao suppressionofshotnoiseinaspinorbitcoupledquantumdot
AT luwenting suppressionofshotnoiseinaspinorbitcoupledquantumdot

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