Anomalous Cyclotron Motion in Graphene Superlattice Cavities

Rainer Kraft, Ming Hao Liu, Pranauv Balaji Selvasundaram, Sz-Chao Chen, Ralph Krupke, Klaus Richter, Romain Danneau

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We consider graphene superlattice miniband fermions probed by electronic interferometry in magnetotransport 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.

Original languageEnglish
Article number217701
JournalPhysical review letters
Volume125
Issue number21
DOIs
Publication statusPublished - 2020 Nov 17

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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