Quantum Pump for Fractional Charge

Details Quantum Pump for Fractional Charge Quantum Pump for Fractional Charge

2007-12-19

arxiv.org/abs/0712.3279v2

Europhys. Lett. 83 (2008) 17004

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Version to appear in Europhys. Lett. (2008)

Scientific paper

10.1209/0295-5075/83/17004

We propose a theoretical scenario for pumping of fractionally charged quasi-particle in the context of $\nu=1/3$ fractional quantum Hall liquid. We consider quasi-particle pumping across an anti-dot level tuned close to the resonance. Fractional charge pumping is achieved by slow and periodic modulation of coupling of the anti-dot level to left and right moving edges of a Hall bar set-up. This is attained by periodically modulating the gate voltages controlling the couplings. In order to obtain quantization of pumped charge in the unit of the electronic charge fraction ($\nu e$) per pumping cycle in the adiabatic limit, we argue that the only possibility is to tune the quasi-particle operator to be irrelevant from being relevant in the renormalization group sense, which can be accomplished by invoking quantum Hall line junctions into the Hall bar geometry. We also comment on possibility for experimental realization of the above scenario.

Affiliated with

Also associated with

No associations

Rating

Quantum Pump for Fractional Charge 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 Quantum Pump for Fractional Charge, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum Pump for Fractional Charge will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-2281