Finite-frequency current (shot) noise in coherent resonant tunneling through a coupled-quantum-dot interferometer

Details Finite-frequency current (shot) noise in coherent resonant tunneling through a coupled-quantum-dot interferometer Finite-frequency current (shot) noise in coherent resonant tunneling through a coupled-quantum-dot interferometer

2008-06-11

arxiv.org/abs/0806.1780v1

J. Appl. Phys. {\bf 104}, 033532 (2008).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 5 figures

Scientific paper

10.1063/1.2967710

We examine the shot noise spectrum properties of coherent resonant tunneling in coupled quantum dots in both series and parallel arrangements by means of quantum rate equations and MacDonald's formula. Our results show that, for a series-CQD with a relatively high dot-dot hopping $\Omega$, $\Omega/\Gamma\gtrsim 1$ ($\Gamma$ denotes the dot-lead tunnel-coupling strength), the noise spectrum exhibits a dip at the Rabi frequency, $2\Omega$, in the case of noninteracting electrons, but the dip is supplanted by a peak in the case of strong Coulomb repulsion; furthermore, it becomes a dip again for a completely symmetric parallel-CQD by tuning enclosed magnetic-flux.

Affiliated with

Also associated with

No associations

Rating

Finite-frequency current (shot) noise in coherent resonant tunneling through a coupled-quantum-dot interferometer 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 Finite-frequency current (shot) noise in coherent resonant tunneling through a coupled-quantum-dot interferometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Finite-frequency current (shot) noise in coherent resonant tunneling through a coupled-quantum-dot interferometer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-264643