Abstract
An experimental study of a Fabry–Perot interferometer in the quantum Hall regime reveals Aharonov–Bohm-like (ABL) oscillations. Unlike the Aharonov–Bohm effect, which has a period of one flux quantum, Φ0, ABL oscillations possess a flux period of Φ0/f, where f is the integral value of fully filled Landau levels in the constrictions. The detection of ABL oscillations is limited to the low magnetic field side of the νc=1, 2, 4, 6, … , integer quantum Hall plateaus. These oscillations can be understood within the Coulomb-dominated model of quantum Hall interferometers as forward tunneling and backscattering, respectively, through the center of the interferometer from the bulk and the edge states.
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