Anomalous charge tunneling in the fractional quantum Hall edge states at filling factor ν= 5/2

Abstract

We explain effective charge anomalies recently observed for fractional quantum Hall edge states at $\nu =5/2$ [M. Dolev, Y. Gross, Y. C. Chung, M. Heiblum, V. Umansky, and D. Mahalu, Phys.Rev. B. \textbf{81}, 161303(R) (2010)]. The experimental data of differential conductance and excess noise are fitted, using the anti-Pfaffian model, by properly take into account renormalizations of the Luttinger parameters induced by the coupling of the system with an intrinsic $1/f$ noise. We demonstrate that a peculiar agglomerate excitation with charge $e/2$, double of the expected $e/4$ charge, dominates the transport properties at low energies.

5 pages, 2 figures

References in corpus (7)

• Non-Abelian Anyons and Topological Quantum Computation
• Particle-hole symmetry and the Pfaffian state
• Particle-Hole Symmetry and the $\nu =5/2$ Quantum Hall State
• Local Charge of the nu=5/2 Fractional Quantum Hall State
• Charge tunneling in fractional edge channels
• Relevance of multiple-quasiparticle tunneling between edge states at ν=p/(2np+1)
• Emission and absorption noise in the fractional quantum Hall effect

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