Mono-parametric quantum charge pumping: interplay between spatial interference and photon-assisted tunneling

Details Mono-parametric quantum charge pumping: interplay between spatial interference and photon-assisted tunneling Mono-parametric quantum charge pumping: interplay between spatial interference and photon-assisted tunneling

2005-11-09

arxiv.org/abs/cond-mat/0511223v1

Phys. Rev. B 72, 245339 (2005).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 4 figures. To appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.72.245339

We analyze quantum charge pumping in an open ring with a dot embedded in one of its arms. We show that cyclic driving of the dot levels by a \textit{single} parameter leads to a pumped current when a static magnetic flux is simultaneously applied to the ring. Based on the computation of the Floquet-Green's functions, we show that for low driving frequencies $\omega_0$, the interplay between the spatial interference through the ring plus photon-assisted tunneling gives an average direct current (dc) which is proportional to $\omega_0^{2}$. The direction of the pumped current can be reversed by changing the applied magnetic field.

Affiliated with

Also associated with

No associations

Rating

Mono-parametric quantum charge pumping: interplay between spatial interference and photon-assisted tunneling 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 Mono-parametric quantum charge pumping: interplay between spatial interference and photon-assisted tunneling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mono-parametric quantum charge pumping: interplay between spatial interference and photon-assisted tunneling will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-104725