Effect of interactions on the noise of chiral Luttinger liquid systems

Details Effect of interactions on the noise of chiral Luttinger liquid systems Effect of interactions on the noise of chiral Luttinger liquid systems

2003-12-19

arxiv.org/abs/cond-mat/0312525v2

Phys. Rev. B 70, 233301 (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures; v2: modified FIG.1, new FIG.2

Scientific paper

10.1103/PhysRevB.70.233301

We analyze the current noise, generated at a quantum point contact in fractional quantum Hall edge state devices, using the chiral Luttinger liquid model with an impurity and the associated exact field theoretic solution. We demonstrate that an experimentally relevant regime of parameters exists where the noise coincides with the partition noise of independent Laughlin quasiparticles. However, outside of this regime, this independent particle picture breaks down and the inclusion of interaction effects is essential to understand the shot noise.

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