Edge-State Velocity and Coherence in a Quantum Hall Fabry-Pérot Interferometer

2009/03/29 by Douglas McClure, D. T. McClure, Yiming Zhang +7 · 4 citations
Physics and Astronomy · #Coherence (philosophical gambling strategy) #Condensed matter physics #Dephasing #Electron #Interferometry #Magnetic field #Physics #Physics of Superconductivity and Magnetism #Quantum Hall effect #Quantum and electron transport phenomena #Quantum mechanics #Topological Materials and Phenomena #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevlett.103.206806

published as Phys. Rev. Lett. 103 206806 (2009). · related papers at http://marcuslab.harvard.edu

arxiv created 2009/03/29 · openalex publication_date 2009/11/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We investigate nonlinear transport in electronic Fabry-Pérot interferometers in the integer quantum Hall regime. For interferometers sufficiently large that Coulomb blockade effects are absent, a checkerboardlike pattern of conductance oscillations as a function of dc bias and perpendicular magnetic field is observed. Edge-state velocities extracted from the checkerboard data are compared to model calculations and found to be consistent with a crossover from skipping orbits at low fields to E-vector x B-vector drift at high fields. Suppression of visibility as a function of bias and magnetic field is accounted for by including energy- and field-dependent dephasing of edge electrons.

Citations

• e/3Laughlin Quasiparticle Primary-Fillingν=1/3Interferometer
• Decoherence and interactions in an electronic Mach-Zehnder interferometer
• Magnetically Induced Chessboard Pattern in the Conductance of a Kondo Quantum Dot
• Significance of Electromagnetic Potentials in the Quantum Theory
• Finite bias visibility of the electronic Mach-Zehnder interferometer
• Resonant Dephasing in the Electronic Mach-Zehnder Interferometer
• Behavior of Electronic Interferometers in the Nonlinear Regime
• Edge-channel interference controlled by Landau level filling
• Non-Abelian anyons and topological quantum computation
• Distinct signatures for Coulomb blockade and Aharonov-Bohm interference in electronic Fabry-Perot interferometers

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• Interactions in Electronic Mach-Zehnder Interferometers with Copropagating Edge Channels