Abstract
Twisted van der Waals heterostructures have recently emerged as a versatile platform 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 moiré materials have emerged with fascinating electronic properties. While the field of twistronics has rapidly evolved and now includes a range of multi-layered systems, moiré systems comprised of double trilayer graphene remain elusive. Here, we report electrical transport measurements combined with tight-binding calculations in twisted double trilayer graphene (TDTLG). We demonstrate that small-angle TDTLG (~1.7−2.0∘) exhibits an intrinsic bandgap at the charge neutrality point. Moreover, by tuning the displacement field, we observe a continuous insulator-semimetal-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. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000663187Publication status
publishedExternal links
Journal / series
npj 2D Materials and ApplicationsVolume
Pages / Article No.
Publisher
NatureFunding
203663 - Three-terminal particle-exchange heat engines for efficient energy conversion at the nanoscale (SNF)
More
Show all metadata
ETH Bibliography
yes
Altmetrics