A spin pump turnstile: parametric pumping of a spin-polarized current through a nearly-closed quantum dot

Details A spin pump turnstile: parametric pumping of a spin-polarized current through a nearly-closed quantum dot A spin pump turnstile: parametric pumping of a spin-polarized current through a nearly-closed quantum dot

2004-11-08

arxiv.org/abs/cond-mat/0411193v2

Phys. Rev. B 71, 041303(R) (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 2 figures, one reference corrected

Scientific paper

10.1103/PhysRevB.71.041303

We investigate parametric pumping of a spin-polarized current through a nearly-closed quantum dot in a perpendicular magnetic field. Pumping is achieved by tuning the tunnel couplings to the left and right lead - thereby operating the quantum dot as a turnstile - and changing either the magnetic field or a gate-voltage. We analyze the quantum dynamics of a pumping cycle and the limiting time scales for operating the quantum dot turnstile as a pure spin pump. The proposed device can be used as a fully controllable double-sided and bipolar spin filter and to inject spins "on demand".

Affiliated with

Also associated with

No associations

Rating

A spin pump turnstile: parametric pumping of a spin-polarized current through a nearly-closed quantum dot 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 A spin pump turnstile: parametric pumping of a spin-polarized current through a nearly-closed quantum dot, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A spin pump turnstile: parametric pumping of a spin-polarized current through a nearly-closed quantum dot will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-109118