Mono-parametric quantum charge pumping: interplay between spatial interference and photon-assisted tunneling
| dc.creator | Torres, Luis E. F. Foa | |
| dc.date | 2005-11-09 | |
| dc.date.accessioned | 2026-07-07T06:45:58Z | |
| dc.date.available | 2026-07-07T06:45:58Z | |
| dc.description | 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 $ω_0$, the interplay between the spatial interference through the ring plus photon-assisted tunneling gives an average direct current (dc) which is proportional to $ω_0^{2}$. The direction of the pumped current can be reversed by changing the applied magnetic field. | |
| dc.description | 7 pages, 4 figures. To appear in Phys. Rev. B | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0511223 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0511223 | |
| dc.identifier | Phys. Rev. B 72, 245339 (2005). | |
| dc.identifier | doi:10.1103/PhysRevB.72.245339 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/103193 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Mono-parametric quantum charge pumping: interplay between spatial interference and photon-assisted tunneling | |
| dc.type | text |