1/3 phase shifts in graphene Fabry-Perot quantum Hall interferometers at integer bulk filling factors

ORAL

Abstract

The Fabry-Perot (FP) quantum Hall interferometer is considered a powerful tool for exploring anyon statistics in the fractional quantum Hall regime. Here, we present Aharonov-Bohm interferences in a high-mobility graphene FP quantum Hall interferometer. We observed phase shifts of 1/3 of the period at integer bulk filling factors νb = 1 and νb = 2 under various quantum point contacts settings. Our results challenge the interpretation in terms of anyon braiding of similar phase shifts recently observed in GaAs in the fractional quantum Hall regime.

* We acknowledge support from theQuantERA II Program that has received funding from the European Union's Horizon 2020 research and innovation program under Grant Agreement No 101017733

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Publication: Nakamura, J., Liang, S., Gardner, G. C., & Manfra, M. J. (2020). Direct observation of anyonic braiding statistics. Nature Physics, 16(9), 931-936.

Presenters

  • Wenmin Yang

    CNRS

Authors

  • Wenmin Yang

    CNRS

  • David perconte

    CNRS

  • Benjamin Sacepe

    Institut Neel, Institut Neel, CNRS