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Twisted van der Waals heterostructures have recently emerged as a versatile plat- form for engineering interaction-driven, topological phenomena with a high degree of control and tunability. Since the initial discovery of correlated phases in twisted bilayer graphene, a wide range of moir ́e materials have emerged with fascinating elec- tronic properties. While the field of twistronics has rapidly evolved and now includes a range of multi-layered systems, moir ́e systems comprised of double trilayer graphene remain elusive. Here, we report electrical transport measurements combined with tight-binding calculations in ABC-stacked twisted double trilayer graphene (TDTLG). We demonstrate that small-angle TDTLG (∼ 1.7−2.0º) exhibits an intrinsic bandgap at the charge neutrality point. Moreover, by tuning the displacement field, we observe a continuous insulator-metal-insulator transition at the CNP, which is also captured by tight-binding calculations. These results establish TDTLG systems as a highly tunable platform for further exploration of magneto-transport and optoelectronic properties.

Rights:

• Creative Commons BY Attribution 4.0 International
  

Keyword: twisted double trilayer graphene (TDTLG)
, tunable bandgap
, twistronics

Date published: 2024-02-27

Publisher: Springer Science and Business Media LLC

Journal:

• npj 2D Materials and Applications (ISSN: 23977132) vol. 8 issue. 1 14

Funding:

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1038/s41699-024-00449-w

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Updated at: 2026-02-09 16:30:15 +0900

Published on MDR: 2026-02-09 12:49:06 +0900