Transport of interacting electrons through a double barrier in quantum wires

Details Transport of interacting electrons through a double barrier in quantum wires Transport of interacting electrons through a double barrier in quantum wires

2002-12-16

arxiv.org/abs/cond-mat/0212355v2

Phys. Rev. B, 68 (2003) 035421

Physics

Condensed Matter

Strongly Correlated Electrons

18 pages, 8 figures; figures added, references updated, extended discussion

Scientific paper

10.1103/PhysRevB.68.035421

We generalize the fermionic renormalization group method to describe analytically transport through a double barrier structure in a one-dimensional system. Focusing on the case of weakly interacting electrons, we investigate thoroughly the dependence of the conductance on the strength and the shape of the double barrier for arbitrary temperature T. Our approach allows us to systematically analyze the contributions to renormalized scattering amplitudes from different characteristic scales absent in the case of a single impurity, without restricting the consideration to the model of a single resonant level. Both a sequential resonant tunneling for high T and a resonant transmission for T smaller than the resonance width are studied within the unified treatment of transport through strong barriers. For weak barriers, we show that two different regimes are possible. Moderately weak impurities may get strong due to a renormalization by interacting electrons, so that transport is described in terms of theory for initially strong barriers. The renormalization of very weak impurities does not yield any peak in the transmission probability; however, remarkably, the interaction gives rise to a sharp peak in the conductance, provided asymmetry is not too high.

Affiliated with

Also associated with

No associations

Rating

Transport of interacting electrons through a double barrier in quantum wires 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 Transport of interacting electrons through a double barrier in quantum wires, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transport of interacting electrons through a double barrier in quantum wires will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-426163