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作者:

Yang, Kai-Hua (Yang, Kai-Hua.) | Di, He-Yang (Di, He-Yang.) | Wang, Huai-Yu (Wang, Huai-Yu.) | Wang, Xu (Wang, Xu.)

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EI Scopus SCIE

摘要:

We study the shot noise of a strongly correlated quantum dot system in the Kondo regime, concentrating on the joint effect of a magnetic field B and intralead Coulomb interaction. A shot noise formula is derived. The shot noise is suppressed by the magnetic field when the intralead interaction is weak, but improved by the field when the interaction is strong. The differential shot noise has a peak or valley at eV = +/- g mu B-B for weak or moderately strong intralead interaction. As the interactions increase, these singular behaviours gradually disappear. In the strong interaction limit, the shot noise's curve has a power-law dependence on the voltage. The intralead Coulomb interaction also modulates the Fano line shape of shot noise. The Fano factor is enhanced by the magnetic field and dot-lead asymmetric coupling and is always sub-Poissonian noise.

关键词:

Luttinger liquid lead Shot noise Effect of magnetic field Quantum dot Kondo effect

作者机构:

  • [ 1 ] [Yang, Kai-Hua]Beijing Univ Technol, Beijing 100124, Peoples R China
  • [ 2 ] [Di, He-Yang]Beijing Univ Technol, Beijing 100124, Peoples R China
  • [ 3 ] [Wang, Huai-Yu]Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
  • [ 4 ] [Wang, Xu]Beihang Univ, Electrochr Ctr, Sch Phys, Beijing 100191, Peoples R China

通讯作者信息:

  • [Yang, Kai-Hua]Beijing Univ Technol, Beijing 100124, Peoples R China

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来源 :

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES

ISSN: 1386-9477

年份: 2021

卷: 129

3 . 3 0 0

JCR@2022

ESI学科: PHYSICS;

ESI高被引阀值:72

JCR分区:2

被引次数:

WoS核心集被引频次: 0

SCOPUS被引频次: 1

ESI高被引论文在榜: 0 展开所有

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