Nonequilibrium Shot Noise Spectrum Through a Quantum Dot in the Kondo Regime： A Master Equation Approach under Self-Consistent Born Approximation

We construct a number（n）-resolved master equation （ME） approach under self-consistent Born approxi- mation （SCBA） for noise spectrum calculation. The formulation is essentially non-Markovian and incorporates properly the interlay of the multi-tunneling processes and many-body correlations. We apply...

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Published in理论物理通讯：英文版 Vol. 60; no. 10; pp. 503 - 509
Main Author 刘玉 金锦双 栗军 李新奇 严以京
Format Journal Article
LanguageEnglish
Published 2013
Subjects
主方程
噪声谱
政权
玻恩近似
自洽
量子点
非平衡
马尔可夫
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Summary:We construct a number（n）-resolved master equation （ME） approach under self-consistent Born approxi- mation （SCBA） for noise spectrum calculation. The formulation is essentially non-Markovian and incorporates properly the interlay of the multi-tunneling processes and many-body correlations. We apply this approach to the chall1enging nonequilibrium Kondo system and predict a profound nonequilibrium Kondo signature in the shot noise spectrum. The proposed n-SCBA-ME scheme goes completely beyond the scope of the Born-Markovian master equation approach, in the sense of being applicable to the shot noise of transport under small bias voltage, in non-Markovian regime, and with strong Coulomb correlations as favorably demonstrated in the nonequilibrium Kondo system.
Bibliography:11-2592/O3
We construct a number（n）-resolved master equation （ME） approach under self-consistent Born approxi- mation （SCBA） for noise spectrum calculation. The formulation is essentially non-Markovian and incorporates properly the interlay of the multi-tunneling processes and many-body correlations. We apply this approach to the chall1enging nonequilibrium Kondo system and predict a profound nonequilibrium Kondo signature in the shot noise spectrum. The proposed n-SCBA-ME scheme goes completely beyond the scope of the Born-Markovian master equation approach, in the sense of being applicable to the shot noise of transport under small bias voltage, in non-Markovian regime, and with strong Coulomb correlations as favorably demonstrated in the nonequilibrium Kondo system.
LIU Yu , JIN Jin-Shuang , LI Jun ,LI Xin-Qi and YAN Yi-Jing（ 1State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China 2Depaxtment of Physics, Hangzhou Normal University, Hangzhou 310036, China 3Beijing Computational Science Research Center, Beijing 100084, China 4Department of Physics, Beijing Normal University, Beijing 100875, China 5Depaxtment of Chemistry, Hong Kong University of Science and Technology, Kowloon, Hong Kong 6College of Physics and Electronic Engineering, Dezhou University, Dezhou 253023, China）
master equation, Kondo system, shot noise
ISSN:0253-6102