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Suppression of shot noise in a spin–orbit coupled quantum dot
Author(s) -
Zhimei Wang,
Lijun Mao,
Naitao Xue,
Wenting Lu
Publication year - 2021
Publication title -
royal society open science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.84
H-Index - 51
ISSN - 2054-5703
DOI - 10.1098/rsos.201432
Subject(s) - shot noise , physics , quantum noise , noise (video) , coupling (piping) , spin (aerodynamics) , electron , quantum dot , polarization (electrochemistry) , quantum , skewness , quantum mechanics , statistical physics , condensed matter physics , optics , statistics , materials science , mathematics , computer science , chemistry , artificial intelligence , detector , metallurgy , image (mathematics) , thermodynamics
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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