2002/11/30 by Mami Hamasaki · 2 citations
Engineering · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.69.115313
published as Phys. Rev. B 69, 115313 (2004) · The paper has been withdrawn. The revised paper has been published in Phys. Rev. B 69, 115313 (2004)
openalex publication_date 2004/03/12 · arxiv created 2005/04/23 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
To study the effects of scattering due to the Coulomb interaction, the dc current and current noise in nonlinear response are investigated on the basis of the second-order perturbation theory for nonequilibrium, using the single- and the two-impurity Anderson model connected to leads. As the numerical result, the shot noise arising from the autocorrelation of the current is suppressed. Additionally, the shot noise occurs in the single-impurity system also from the correlation between the currents with antiparallel spin. From the perturbation theory for nonequilibrium, it is predicted that current noise is caused also from the correlation between the currents with antiparallel spin owing to the interaction though this kind of current noise is not generated in normal noninteracting system.