Neutral modes edge state dynamics through quantum point contacts

Details Neutral modes edge state dynamics through quantum point contacts Neutral modes edge state dynamics through quantum point contacts

2009-10-29

arxiv.org/abs/0910.5693v1

New J. Phys. 12, 013012 (2010).

Physics

Condensed Matter

Strongly Correlated Electrons

28 pages, 5 figures

Scientific paper

10.1088/1367-2630/12/1/013012

Dynamics of neutral modes for fractional quantum Hall states is investigated for a quantum point contact geometry in the weak-backscattering regime. The effective field theory introduced by Fradkin-Lopez for edge states in the Jain sequence is generalized to the case of propagating neutral modes. The dominant tunnelling processes are identified also in the presence of non-universal phenomena induced by interactions. The crossover regime in the backscattering current between tunnelling of single-quasiparticles and of agglomerates of p-quasiparticles is analysed. We demonstrate that higher order cumulants of the backscattering current fluctuations are a unique resource to study quantitatively the competition between different carrier charges. We find that propagating neutral modes are a necessary ingredient in order to explain this crossover phenomena.

Affiliated with

Also associated with

No associations

Rating

Neutral modes edge state dynamics through quantum point contacts 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 Neutral modes edge state dynamics through quantum point contacts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Neutral modes edge state dynamics through quantum point contacts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-405455