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Transport of fractional Hall quasiparticles through an antidot | | Matteo Merlo
; Alessandro Braggio
; Nicodemo Magnoli
; Maura Sassetti
; | | Date: |
18 Jan 2007 | | Subject: | Mesoscopic Systems and Quantum Hall Effect; Strongly Correlated
Electrons | | Abstract: | Current statistics of an antidot in the fractional quantum Hall regime is studied for Laughlin’s series. The chiral Luttinger liquid picture of edge states with a renormalized interaction exponent $g$ is adopted. Several peculiar features are found in the sequential tunneling regime. On one side, current displays negative differential conductance and double-peak structures when $g<1$. On the other side, universal sub-poissonian transport regimes are identified through an analysis of higher current moments. A comparison between Fano factor and skewness is proposed in order to clearly distinguish the charge of the carriers, regardless of possible non-universal interaction renormalizations. Super-poissonian statistics is obtained in the shot limit for $g<1$, and plasmonic effects due to the finite-size antidot are tracked. | | Source: | arXiv, cond-mat/0701438 | | Services: | Forum | Review | PDF | Favorites | |
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