English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present a set of modified quantum rate equations, with the help of thenonequilibrium Green's function and slave-particle techniques along with thecorrect quantization, for description of the quantum transport through aninteracting mesoscopic region connected with two leads, in the sequentialtunneling regime. The assumption that only leading order of $|V|^2$ ($V$ is thetunneling coupling between the interacting central region and the leads) hasbeen taken into account in deriving these equations implies that the quantumrate equations are only valid in the case of weak coupling between the centralregion and the leads. For demonstrations, we consider two special cases in thecentral region, a single interacting quantum dot (SQD) with weak spin-flipscattering and a weakly coupled double quantum dots (CQD), as examples. In thelimit of zero temperature and large bias voltage, the resulting equations areidentical to the previous results derived from the many-body Schr\"odingerequation. The numerical simulations reveal: 1) the dependence of the spin-flipscattering on the temperature and bias voltage in the SQD; and 2) the possiblenegative differential conductance and negative tunnel magnetoresistance in theCQD, depending on the hopping between the two quantum dots.Comment: 16 pages, 10 figures,some minor changes, to be published in Phys.  Rev.

Quantum rate equations for electron transport through an interacting system in the sequential tunneling regime