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

Details Two regimes of quantum Hall Mach-Zehnder interferometer at fractional filling factors Two regimes of quantum Hall Mach-Zehnder interferometer at fractional filling factors

2012-04-25

arxiv.org/abs/1204.5568v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages

Scientific paper

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.

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