論文 Tunable transmission of quantum Hall edge channels with full degeneracy lifting in split-gated graphene devices

Katrin Zimmermann ; Anna Jordan ; Frédéric Gay ; Kenji Watanabe SAMURAI ORCID (National Institute for Materials Science) ; Takashi Taniguchi SAMURAI ORCID (National Institute for Materials Science) ; Zheng Han ; Vincent Bouchiat ; Hermann Sellier ; Benjamin Sacépé

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Katrin Zimmermann, Anna Jordan, Frédéric Gay, Kenji Watanabe, Takashi Taniguchi, Zheng Han, Vincent Bouchiat, Hermann Sellier, Benjamin Sacépé. Tunable transmission of quantum Hall edge channels with full degeneracy lifting in split-gated graphene devices. Nature Communications. 2017, 8 (), 14983. https://doi.org/10.1038/ncomms14983
SAMURAI

説明:

(abstract)

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:

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

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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

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