Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2011-08-20
Physica E 43, 1887 (2011)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
13 pages, 2 figures
Scientific paper
We developed a set of equations to calculate the electronic Green's functions in a T-shaped multi-quantum dot system using the equation of motion method. We model the system using a generalized Anderson Hamiltonian which accounts for {\em finite} intradot on-site Coulomb interaction in all component dots as well as for the interdot electron tunneling between adjacent quantum dots. Our results are obtained within and beyond the Hartree-Fock approximation and provide a path to evaluate all the electronic correlations in the multi-quantum dot system in the Coulomb blockade regime. Both approximations provide information on the physical effects related to the finite intradot on-site Coulomb interaction. As a particular example for our generalized results, we considered the simplest T-shaped system consisting of two dots and proved that our approximation introduces important corrections in the detector and side dots Green's functions, and implicitly in the evaluation of the system's transport properties. The multi-quantum dot T-shaped setup may be of interest for the practical realization of qubit states in quantum dots systems.
Crisan Mircea
Pal George
Tifrea Ionel
No associations
LandOfFree
Electronic Green's functions in a T-shaped multi-quantum dot system does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Electronic Green's functions in a T-shaped multi-quantum dot system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic Green's functions in a T-shaped multi-quantum dot system will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-244447