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説明:

We show that electron-hole mixing is drastically reduced in high mobility graphene van-der-Waals heterostructures thanks to the full degeneracy lifting of the Landau levels, enabling quantum point contact operation with full channel pinch-off. We demonstrate gate-tunable selective transmission of integer and fractional quantum Hall edge channels through the quantum point contact. This gate-control of edge channels opens the door to quantum Hall interferometry and electron quantum optics experiments in the integer and fractional quantum Hall regimes of graphene.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: Quantum Hall regime, graphene, quantum point contact

刊行年月日: 2017-04-13

出版者: Springer Science and Business Media LLC

掲載誌:

• Nature Communications (ISSN: 20411723) vol. 8 14983

研究助成金:

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1038/ncomms14983

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更新時刻: 2025-02-27 08:30:08 +0900

MDRでの公開時刻: 2025-02-27 08:30:09 +0900