Experimental study of quantum Hall corrals reveals Aharonov-Bohm-Like (ABL) oscillations. Unlike the Aharonov-Bohm effect which has a period of one flux quantum, Φ0, the ABL oscillations possess a flux period of Φ0/f, where f is the integer number of fully filled Landau levels in the constrictions. Detection of the 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 blockade model of quantum Hall interferometers as forward tunneling and backscattering, respectively, through the center island of the corral from the bulk and the edge states. The evidence for quantum interference is weak and circumstantial.
@article{arxiv.0708.2448,
title = {Aharonov-Bohm-Like Oscillations in Quantum Hall Corrals},
author = {M. D. Godfrey and P. Jiang and W. Kang and S. H. Simon and K. W. Baldwin and L. N. Pfeiffer and K. W. West},
journal= {arXiv preprint arXiv:0708.2448},
year = {2007}
}