Shot Noise in a Quantum Dot with the Finite Coulomb Interaction

We study the shot noise in a quantum dot which coupled to metallic leads using the equation of motion of nonequilibrium Green’s function technique at Kondo temperature T K . We compute the out of equilibrium density of states, the current and the shot noise. We find that the value of shot noise in t...

Full description

Saved in:
Bibliographic Details
Published in:Journal of low temperature physics 2011-09, Vol.164 (5-6), p.237-244
Main Author: Cao, Xian-Sheng
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Condensed Matter Physics
Coulomb friction
Equations of motion
Kondo temperature
Magnetic fields
Magnetic Materials
Magnetism
Mathematical analysis
Physics
Physics and Astronomy
Quantum dots
Shot noise
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We study the shot noise in a quantum dot which coupled to metallic leads using the equation of motion of nonequilibrium Green’s function technique at Kondo temperature T K . We compute the out of equilibrium density of states, the current and the shot noise. We find that the value of shot noise in the finite coulomb interaction case is smaller than one at Kondo temperature T K when variation of ε d values of the QD energy in the absence of the external magnetic field. We also find that the values of S (0)/ V are almost insusceptible to U when eV d under 2, while the values of S (0)/ V appear slightly branch off when the value of eV d approach to 6.
ISSN:0022-2291
1573-7357
DOI:10.1007/s10909-011-0377-6