The DOI matches its Crossref record; 39 of the 39 references it cites were found in a registry or an index.
Resonantly hybridized excitons in moiré superlattices in van der Waals heterostructures
Open accessAbstract
Atomically thin layers of two-dimensional materials can be assembled in vertical stacks that are held together by relatively weak van der Waals forces, enabling coupling between monolayer crystals with incommensurate lattices and arbitrary mutual rotation1,2. Consequently, an overarching periodicity emerges in the local atomic registry of the constituent crystal structures, which is known as a moiré superlattice3. In graphene/hexagonal boron nitride structures4, the presence of a moiré superlattice can lead to the observation of electronic minibands5–7, whereas in twisted graphene bilayers its effects are enhanced by interlayer resonant conditions, resulting in a superconductor–insulator transition at magic twist angles8. Here, using semiconducting heterostructures assembled from incommensurate molybdenum diselenide (MoSe2) and tungsten disulfide (WS2) monolayers, we demonstrate that excitonic bands can hybridize, resulting in a resonant enhancement of moiré superlattice effects. MoSe2 and WS2 were chosen for the near-degeneracy of their conduction-band edges, in order to promote the hybridization of intra- and interlayer excitons. Hybridization manifests through a pronounced exciton energy shift as a periodic function of the interlayer rotation angle, which occurs as hybridized excitons are formed by holes that reside in MoSe2 binding to a twist-dependent superposition of electron states in the adjacent monolayers. For heterostructures in which the monolayer pairs are nearly aligned, resonant mixing of the electron states leads to pronounced effects of the geometrical moiré pattern of the heterostructure on the dispersion and optical spectra of the hybridized excitons. Our findings underpin strategies for band-structure engineering in semiconductor devices based on van der Waals heterostructures9. Excitonic bands in MoSe2/WS2 heterostructures can hybridize, resulting in a resonant enhancement of moiré superlattice effects.
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Citations
Cites
Van der Waals heterostructures
Geim, A. K., & Grigorieva, I. V. (2013) · Nature · doi:10.1038/nature12385 · Cited by 10,875
Unconventional superconductivity in magic-angle graphene superlattices
Cao, Y., Fatemi, V., Fang, S., Watanabe, K., Taniguchi, T., Kaxiras, E., & Jarillo-Herrero, P. (2018) · Nature · doi:10.1038/nature26160 · Cited by 8,300
Self-citation2D materials and van der Waals heterostructures
Novoselov, K. S., Mishchenko, A., Carvalho, A., & Castro Neto, A. H. (2016) · Science · doi:10.1126/science.aac9439 · Cited by 7,434
Self-citationPhotonics and optoelectronics of 2D semiconductor transition metal dichalcogenides
Mak, K. F., & Shan, J. (2016) · Nature Photonics · doi:10.1038/nphoton.2015.282 · Cited by 3,819
Moiré bands in twisted double-layer graphene
Bistritzer, R., & MacDonald, A. H. (2011) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1108174108 · Cited by 3,072
Grains and grain boundaries in highly crystalline monolayer molybdenum disulphide
van der Zande, A. M., Huang, P. Y., Chenet, D. A., Berkelbach, T. C., You, Y., Lee, G.-H., Heinz, T. F., Reichman, D. R., Muller, D. A., & Hone, J. C. (2013) · Nature Materials · doi:10.1038/nmat3633 · Cited by 2,197
Hofstadter’s butterfly and the fractal quantum Hall effect in moiré superlattices
Dean, C. R., Wang, L., Maher, P., Forsythe, C., Ghahari, F., Gao, Y., Katoch, J., Ishigami, M., Moon, P., Koshino, M., et al. (2013) · Nature · doi:10.1038/nature12186 · Cited by 1,745
Self-citationBand offsets and heterostructures of two-dimensional semiconductors
Kang, J., Tongay, S., Zhou, J., Li, J., & Wu, J. (2013) · Applied Physics Letters · doi:10.1063/1.4774090 · Cited by 1,708
Light-emitting diodes by band-structure engineering in van der Waals heterostructures
Withers, F., Del Pozo-Zamudio, O., Mishchenko, A., Rooney, A. P., Gholinia, A., Watanabe, K., Taniguchi, T., Haigh, S. J., Geim, A. K., Tartakovskii, A. I., et al. (2015) · Nature Materials · doi:10.1038/nmat4205 · Cited by 1,687
Self-citationMassive Dirac Fermions and Hofstadter Butterfly in a van der Waals Heterostructure
Hunt, B., Sanchez-Yamagishi, J. D., Young, A. F., Yankowitz, M., LeRoy, B. J., Watanabe, K., Taniguchi, T., Moon, P., Koshino, M., Jarillo-Herrero, P., et al. (2013) · Science · doi:10.1126/science.1237240 · Cited by 1,682
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Cited by
Structure, Properties and Applications of Two‐Dimensional Hexagonal Boron Nitride
Roy, S., Zhang, X., Puthirath, A. B., Meiyazhagan, A., Bhattacharyya, S., Rahman, M. M., Babu, G., Susarla, S., Saju, S. K., Tran, M. K., et al. (2021) · Advanced Materials · doi:10.1002/adma.202101589 · Cited by 871
Topological polaritons and photonic magic angles in twisted α-MoO3 bilayers
Hu, G., Ou, Q., Si, G., Wu, Y., Wu, J., Dai, Z., Krasnok, A., Mazor, Y., Zhang, Q., Bao, Q., et al. (2020) · Nature · doi:10.1038/s41586-020-2359-9 · Cited by 720
General synthesis of two-dimensional van der Waals heterostructure arrays
Li, J., Yang, X., Liu, Y., Huang, B., Wu, R., Zhang, Z., Zhao, B., Ma, H., Dang, W., Wei, Z., et al. (2020) · Nature · doi:10.1038/s41586-020-2098-y · Cited by 601
Van der Waals heterostructures
Castellanos-Gomez, A., Duan, X., Fei, Z., Gutierrez, H. R., Huang, Y., Huang, X., Quereda, J., Qian, Q., Sutter, E., & Sutter, P. (2022) · Nature Reviews Methods Primers · doi:10.1038/s43586-022-00139-1 · Cited by 423
Emergent phenomena and proximity effects in two-dimensional magnets and heterostructures
Huang, B., McGuire, M. A., May, A. F., Xiao, D., Jarillo-Herrero, P., & Xu, X. (2020) · Nature Materials · doi:10.1038/s41563-020-0791-8 · Cited by 396
Metadata
- Authors
- Alexeev, E. M., Ruiz-Tijerina, D. A., Danovich, M., Hamer, M. J., Terry, D. J., Nayak, P. K., Ahn, S., Pak, S., Lee, J., Sohn, J. I., Molas, M. R., Koperski, M., Watanabe, K., Taniguchi, T., Novoselov, K. S., Gorbachev, R. V., Shin, H. S., Fal’ko, V. I., & Tartakovskii, A. I.
- Venue
- Nature
- Published
- 2019-03-06
- Volume
- 567
- Issue
- 7746
- Pages
- 81-86
- ISSN
- 0028-0836 (ISSN-L)
- 1476-4687
- OpenAlex
- W2919682265
- Cited by
- 869
- References
- 39
- FWCI
- 44.81
- Type
- journal article
- Language
- en
- Open access
- green
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- Alexeev, E. M., Ruiz-Tijerina, D. A., Danovich, M., Hamer, M. J., Terry, D. J., Nayak, P. K., Ahn, S., Pak, S., Lee, J., Sohn, J. I., Molas, M. R., Koperski, M., Watanabe, K., Taniguchi, T., Novoselov, K. S., Gorbachev, R. V., Shin, H. S., Fal’ko, V. I., & Tartakovskii, A. I. (2019). Resonantly hybridized excitons in moiré superlattices in van der Waals heterostructures. Nature. https://doi.org/10.1038/s41586-019-0986-9
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