Anomalous Cyclotron Motion in Graphene Superlattice Cavities

Kraft, Rainer and Liu, Ming-Hao and Selvasundaram, Pranauv Balaji and Chen, Szu-Chao and Krupke, Ralph and Richter, Klaus and Danneau, Romain (2020) Anomalous Cyclotron Motion in Graphene Superlattice Cavities. PHYSICAL REVIEW LETTERS, 125 (21): 217701. ISSN 0031-9007, 1079-7114

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Abstract

We consider graphene superlattice miniband fermions probed by electronic interferometry in magneto-transport experiments. By decoding the observed Fabry-Perot 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.

Item Type: Article
Uncontrolled Keywords: ;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter
Depositing User: Dr. Gernot Deinzer
Date Deposited: 08 Mar 2021 09:19
Last Modified: 08 Mar 2021 09:19
URI: https://pred.uni-regensburg.de/id/eprint/43359

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