Anomalous Cyclotron Motion in Graphene Superlattice Cavities

Abstract

We consider graphene superlattice miniband fermions probed by electronic interferometry in magneto-transport experiments. By decoding the observed Fabry-Pérot interference patterns together with our corresponding quantum transport simulations, we find that the Dirac quasiparticles originating from the superlattice minibands do not undergo conventional cyclotron motion but follow more subtle trajectories. In particular, dynamics at low magnetic fields is characterized by peculiar, straight trajectory segments. Our results provide new insights into superlattice miniband fermions and open up novel possibilities to use periodic potentials in electron optics experiments.

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Cited by in corpus (7)

• Dirac fermion optics and directed emission from single- and bilayer graphene cavities
• Gate-tunable regular and chaotic electron dynamics in ballistic bilayer graphene cavities
• Probing miniband structure and Hofstadter butterfly in gated graphene superlattices via magnetotransport
• Complex Supersymmetry in Graphene
• Characterization of a graphene-hBN superlattice field effect transistor
• Energy distribution controlled ballistic Josephson junction
• Fabry-Perot and Aharonov-Bohm interference in ideal graphene nanoribbons