Finite frequency noise for edge states at filling factor $\nu =2/5$

Abstract

We investigate the properties of the finite frequency noise in a quantum point contact geometry for the fractional quantum Hall state at filling factor $\nu =2/5$. The results are obtained in the framework of the Wen's hierarchical model. We show that the peak structure of the colored noise allows to discriminate among different possible excitations involved in the tunneling. In particular, optimal values of voltage and temperature are found in order to enhance the visibility of the peak associated with the tunneling of a 2-agglomerate, namely an excitation with charge double of the fundamental one associated to the single quasiparticle.

5 pages, 1 figure, to be published in the Proceedings of the Conference on the Frontiers of Quantum and Mesoscopic Thermodynamics (FQMT11)

References in corpus (5)

• Dephasing in the electronic Mach-Zehnder interferometer at filling factor 2
• Experimental Test of the High-Frequency Quantum Shot Noise Theory in a Quantum Point Contact
• Transport properties of single channel quantum wires with an impurity: Influence of finite length and temperature on average current and noise
• Charge tunneling in fractional edge channels
• Relevance of multiple-quasiparticle tunneling between edge states at ν=p/(2np+1)

Cited by in corpus (5)

• Multiple quasiparticle Hall spectroscopy investigated with a resonant detector
• Fluctuation dissipation relations for strongly correlated out-of-equilibrium circuits
• Self-equilibration theorem in quantum-point contacts of interacting electrons: time-dependent quantum fluctuations of tunnel transport beyond the Levitov-Lesovik scattering approach
• Photo-assisted shot noise probes multiple charge carriers in quantum Hall edges
• Finite frequency noise for Laughlin state investigated by a resonant circuit