McClure, Douglas TempletonZhang, YimingRosenow, BerndLevenson-Falk, Eli M.Marcus, CPfeiffer, LorenWest, Kenneth W.2011-08-152009McClure, Douglas T., Yiming Zhang, Eli M. Levenson-Falk, Charles M. Marcus, Loren N. Pfeiffer, and Kenneth W. West. 2009. Edge-state velocity and coherence in a quantum hall Fabry-Pérot interferometer. Physical Review Letters 103(206806).0031-9007http://nrs.harvard.edu/urn-3:HUL.InstRepos:5110748We 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 \(\vec{E} \times \vec{B}\) 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.en-UStunnel-junctionsJournal Article2011-08-1510.1103/PhysRevLett.103.206806