The DOI matches its Crossref record; 40 of the 40 references it cites were found in a registry or an index.
Atomic and electronic reconstruction at the van der Waals interface in twisted bilayer graphene
Open accessAbstract
Control of the interlayer twist angle in two-dimensional van der Waals (vdW) heterostructures enables one to engineer a quasiperiodic moiré superlattice of tunable length scale1–8. In twisted bilayer graphene, the simple moiré superlattice band description suggests that the electronic bandwidth can be tuned to be comparable to the vdW interlayer interaction at a ‘magic angle’9, exhibiting strongly correlated behaviour. However, the vdW interlayer interaction can also cause significant structural reconstruction at the interface by favouring interlayer commensurability, which competes with the intralayer lattice distortion10–16. Here we report atomic-scale reconstruction in twisted bilayer graphene and its effect on the electronic structure. We find a gradual transition from an incommensurate moiré structure to an array of commensurate domains with soliton boundaries as we decrease the twist angle across the characteristic crossover angle, θc ≈ 1°. In the solitonic regime (θ < θc) where the atomic and electronic reconstruction become significant, a simple moiré band description breaks down and the secondary Dirac bands appear. On applying a transverse electric field, we observe electronic transport along the network of one-dimensional topological channels that surround the alternating triangular gapped domains. Atomic and electronic reconstruction at the vdW interface provide a new pathway to engineer the system with continuous tunability.An investigation of the structural and transport properties of bilayer graphene as a function of the twist angle between the layers reveals atomic-scale reconstruction for twist angles smaller than a critical value.
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Cites
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Cited by
Tuning superconductivity in twisted bilayer graphene
Yankowitz, M., Chen, S., Polshyn, H., Zhang, Y., Watanabe, K., Taniguchi, T., Graf, D., Young, A. F., & Dean, C. R. (2019) · Science · doi:10.1126/science.aav1910 · Cited by 2,290
Self-citationTunable correlated Chern insulator and ferromagnetism in a moiré superlattice
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Self-citationSignatures of tunable superconductivity in a trilayer graphene moiré superlattice
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Metadata
- Authors
- Yoo, H., Engelke, R., Carr, S., Fang, S., Zhang, K., Cazeaux, P., Sung, S. H., Hovden, R., Tsen, A. W., Taniguchi, T., Watanabe, K., Yi, G.-C., Kim, M., Luskin, M., Tadmor, E. B., Kaxiras, E., & Kim, P.
- Venue
- Nature Materials
- Published
- 2019-04-15
- Volume
- 18
- Issue
- 5
- Pages
- 448-453
- ISSN
- 1476-1122 (ISSN-L)
- 1476-4660
- OpenAlex
- W2895694726
- Cited by
- 708
- References
- 40
- FWCI
- 30.91
- Type
- journal article
- Language
- en
- Open access
- green
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- Yoo, H., Engelke, R., Carr, S., Fang, S., Zhang, K., Cazeaux, P., Sung, S. H., Hovden, R., Tsen, A. W., Taniguchi, T., Watanabe, K., Yi, G.-C., Kim, M., Luskin, M., Tadmor, E. B., Kaxiras, E., & Kim, P. (2019). Atomic and electronic reconstruction at the van der Waals interface in twisted bilayer graphene. Nature Materials. https://doi.org/10.1038/s41563-019-0346-z
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