1204.5568 (E. V. Deviatov et al.)

Two regimes of quantum Hall Mach-Zehnder interferometer at fractional
filling factors    [PDF]

E. V. Deviatov, S. V. Egorov, G. Biasiol, L. Sorba

We use a Mach-Zehnder quantum Hall interferometer of a novel design to investigate the interference effects at fractional filling factors. Our device brings together the advantages of usual Mach-Zehnder and Fabry-Perot quantum Hall interferometers. It realizes the simplest-for-analysis Mach-Zehnder interference scheme with nothing but quantum Hall liquid within the interference loop. The device demonstrates either $\Phi_0=hc/e$ or $\Phi^*=e/e^*\Phi_0$ periodicity depending on the way the magnetic flux $\Phi$ is varied through the interference loop.

View original: http://arxiv.org/abs/1204.5568