A corner reflector of graphene Dirac fermions as a phonon-scattering sensor

A corner reflector of graphene Dirac fermions as a phonon-scattering sensor

Dirac fermion optics leverages p-n junctions and Klein tunnelling barriers present in materials to implement complex optical functions and devices, including reflectors, collimators, and Dirac fermion microscopes. Here, the authors fabricate Dirac fermion corner reflectors using bottom-gate-defined...

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Bibliographic Details
Main Authors: H. Graef, Q. Wilmart, M. Rosticher, D. Mele, L. Banszerus, C. Stampfer, T. Taniguchi, K. Watanabe, J.-M. Berroir, E. Bocquillon, G. Fève, E. H. T. Teo, B. Plaçais
Format: article
Language:EN
Published: Nature Portfolio 2019
Subjects:
Science
Q
Online Access:https://doaj.org/article/b36f46e5e6fd4fffa04dd63c54e64e9f
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Summary:Dirac fermion optics leverages p-n junctions and Klein tunnelling barriers present in materials to implement complex optical functions and devices, including reflectors, collimators, and Dirac fermion microscopes. Here, the authors fabricate Dirac fermion corner reflectors using bottom-gate-defined barriers in hBN-encapsulated graphene, and demonstrate high-frequency operation.

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