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説明:

Interfaces of van der Waals (vdW) materials such as graphite and hexagonal boron nitride (hBN) exhibit low-friction sliding due to their atomically-Jat surfaces and weak vdW bonding. We demonstrate that microfabricated gold also slides with low friction on hBN. This enables the arbitrary post-fabrication repositioning of device features both at ambient conditions as well as in-situ to a measurement cryostat. We demonstrate mechanically-reconfigurable vdW devices where device geometry and position are continuously-tunable parameters. By fabricating slidable top gates on a graphene-hBN device, we produce a mechanically-tunable quantum point contact where electron con?nement and edge-state coupling can be continuously modified. Moreover, we combine in-situ sliding with simultaneous electronic measurements to create new types of scanning probe experiments, where gate electrodes and even entire vdW heterostructures devices can be spatially scanned by sliding across a target.

権利情報:

• Creative Commons BY-NC Attribution-NonCommercial 4.0 International
  

キーワード: Low-friction sliding, van der Waals materials, quantum devices

刊行年月日: 2023-04-07

出版者: American Association for the Advancement of Science (AAAS)

掲載誌:

• Science Advances (ISSN: 23752548) vol. 9 issue. 14 eadf9558

研究助成金:

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1126/sciadv.adf9558

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更新時刻: 2025-02-23 22:46:34 +0900

MDRでの公開時刻: 2025-02-23 22:46:35 +0900