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Author:

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

Indexed by:

EI Scopus SCIE

Abstract:

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.

Keyword:

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

Author Community:

  • [ 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

Reprint Author's Address:

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

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Source :

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES

ISSN: 1386-9477

Year: 2021

Volume: 129

3 . 3 0 0

JCR@2022

ESI Discipline: PHYSICS;

ESI HC Threshold:72

JCR Journal Grade:2

Cited Count:

WoS CC Cited Count: 1

SCOPUS Cited Count: 1

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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