The DOI matches its Crossref record; 27 of the 27 references it cites were found in a registry or an index.
Evidence of a gate-tunable Mott insulator in a trilayer graphene moiré superlattice
Open accessAbstract
The Mott insulator is a central concept in strongly correlated physics and manifests when the repulsive Coulomb interaction between electrons dominates over their kinetic energy1,2. Doping additional carriers into a Mott insulator can give rise to other correlated phenomena such as unusual magnetism and even high-temperature superconductivity2,3. A tunable Mott insulator, where the competition between the Coulomb interaction and the kinetic energy can be varied in situ, can provide an invaluable model system for the study of Mott physics. Here we report the possible realization of such a tunable Mott insulator in a trilayer graphene heterostructure with a moiré superlattice. The combination of the cubic energy dispersion in ABC-stacked trilayer graphene4–8 and the narrow electronic minibands induced by the moiré potential9–15 leads to the observation of insulating states at the predicted band fillings for the Mott insulator. Moreover, the insulating states in the heterostructure can be tuned: the bandgap can be modulated by a vertical electrical field, and at the same time the electron doping can be modified by a gate to fill the band from one insulating state to another. This opens up exciting opportunities to explore strongly correlated phenomena in two-dimensional moiré superlattice heterostructures.Report of the likely observation of a Mott insulator in trilayer graphene with a moiré potential. The Mott state can be tuned between different filling fractions via gating, which will enable the careful study of this paradigmatic many-body state.
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Cites
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Self-citationOne-Dimensional Electrical Contact to a Two-Dimensional Material
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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-citationMott and generalized Wigner crystal states in WSe2/WS2 moiré superlattices
Regan, E. C., Wang, D., Jin, C., Bakti Utama, M. I., Gao, B., Wei, X., Zhao, S., Zhao, W., Zhang, Z., Yumigeta, K., et al. (2020) · Nature · doi:10.1038/s41586-020-2092-4 · Cited by 984
Self-citationSuperconductivity and strong correlations in moiré flat bands
Balents, L., Dean, C. R., Efetov, D. K., & Young, A. F. (2020) · Nature Physics · doi:10.1038/s41567-020-0906-9 · Cited by 871
Tunable strongly coupled superconductivity in magic-angle twisted trilayer graphene
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Self-citationTunable correlated Chern insulator and ferromagnetism in a moiré superlattice
Chen, G., Sharpe, A. L., Fox, E. J., Zhang, Y.-H., Wang, S., Jiang, L., Lyu, B., Li, H., Watanabe, K., Taniguchi, T., et al. (2020) · Nature · doi:10.1038/s41586-020-2049-7 · Cited by 720
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Metadata
- Authors
- Chen, G., Jiang, L., Wu, S., Lyu, B., Li, H., Chittari, B. L., Watanabe, K., Taniguchi, T., Shi, Z., Jung, J., Zhang, Y., & Wang, F.
- Venue
- Nature Physics
- Published
- 2019-01-21
- Volume
- 15
- Issue
- 3
- Pages
- 237-241
- ISSN
- 1745-2473 (ISSN-L)
- 1745-2481
- OpenAlex
- W2910757011
- Cited by
- 572
- References
- 27
- FWCI
- 29.44
- Type
- journal article
- Language
- en
- Open access
- green
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- Chen, G., Jiang, L., Wu, S., Lyu, B., Li, H., Chittari, B. L., Watanabe, K., Taniguchi, T., Shi, Z., Jung, J., Zhang, Y., & Wang, F. (2019). Evidence of a gate-tunable Mott insulator in a trilayer graphene moiré superlattice. Nature Physics. https://doi.org/10.1038/s41567-018-0387-2
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