The DOI matches its Crossref record; 37 of the 37 references it cites were found in a registry or an index.
Topological polaritons and photonic magic angles in twisted α-MoO3 bilayers
Open accessAbstract
Twisted two-dimensional bilayer materials exhibit many exotic electronic phenomena. Manipulating the ‘twist angle’ between the two layers enables fine control of the electronic band structure, resulting in magic-angle flat-band superconductivity1,2, the formation of moiré excitons3–8 and interlayer magnetism9. However, there are limited demonstrations of such concepts for photons. Here we show how analogous principles, combined with extreme anisotropy, enable control and manipulation of the photonic dispersion of phonon polaritons in van der Waals bilayers. We experimentally observe tunable topological transitions from open (hyperbolic) to closed (elliptical) dispersion contours in bilayers of α-phase molybdenum trioxide (α-MoO3), arising when the rotation between the layers is at a photonic magic twist angle. These transitions are induced by polariton hybridization and are controlled by a topological quantity. At the transitions the bilayer dispersion flattens, exhibiting low-loss tunable polariton canalization and diffractionless propagation with a resolution of less than λ0/40, where λ0 is the free-space wavelength. Our findings extend twistronics10 and moiré physics to nanophotonics and polaritonics, with potential applications in nanoimaging, nanoscale light propagation, energy transfer and quantum physics. The photonic dispersion of phonon polaritons in bilayers of α-phase molybdenum trioxide can undergo tunable topological transitions at magic interlayer twist angles.
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Cites
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
Planar Photonics with Metasurfaces
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Evidence for moiré excitons in van der Waals heterostructures
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Tunable Phonon Polaritons in Atomically Thin van der Waals Crystals of Boron Nitride
Dai, S., Fei, Z., Ma, Q., Rodin, A. S., Wagner, M., McLeod, A. S., Liu, M. K., Gannett, W., Regan, W., Watanabe, K., et al. (2014) · Science · doi:10.1126/science.1246833 · Cited by 1,328
Polaritons in layered two-dimensional materials
Low, T., Chaves, A., Caldwell, J. D., Kumar, A., Fang, N. X., Avouris, P., Heinz, T. F., Guinea, F., Martin-Moreno, L., & Koppens, F. (2017) · Nature Materials · doi:10.1038/nmat4792 · Cited by 1,317
Signatures of moiré-trapped valley excitons in MoSe2/WSe2 heterobilayers
Seyler, K. L., Rivera, P., Yu, H., Wilson, N. P., Ray, E. L., Mandrus, D. G., Yan, J., Yao, W., & Xu, X. (2019) · Nature · doi:10.1038/s41586-019-0957-1 · Cited by 1,223
Polaritons in van der Waals materials
Basov, D. N., Fogler, M. M., & García de Abajo, F. J. (2016) · Science · doi:10.1126/science.aag1992 · Cited by 1,201
Observation of moiré excitons in WSe2/WS2 heterostructure superlattices
Jin, C., Regan, E. C., Yan, A., Iqbal Bakti Utama, M., Wang, D., Zhao, S., Qin, Y., Yang, S., Zheng, Z., Shi, S., et al. (2019) · Nature · doi:10.1038/s41586-019-0976-y · Cited by 1,157
Highly confined low-loss plasmons in graphene–boron nitride heterostructures
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Cited by
Interface nano-optics with van der Waals polaritons
Zhang, Q., Hu, G., Ma, W., Li, P., Krasnok, A., Hillenbrand, R., Alù, A., & Qiu, C.-W. (2021) · Nature · doi:10.1038/s41586-021-03581-5 · Cited by 298
Self-citationQiu, C.-W., Zhang, T., Hu, G., & Kivshar, Y. (2021) · Nano Letters · doi:10.1021/acs.nanolett.1c00828 · Cited by 243
Self-citationWS2 moiré superlattices derived from mechanical flexibility for hydrogen evolution reaction
Xie, L., Wang, L., Zhao, W., Liu, S., Huang, W., & Zhao, Q. (2021) · Nature Communications · doi:10.1038/s41467-021-25381-1 · Cited by 240
Optical topological lattices of Bloch-type skyrmion and meron topologies
Zhang, Q., Xie, Z., Shi, P., Yang, H., He, H., Du, L., & Yuan, X. (2022) · Photonics Research · doi:10.1364/prj.447311 · Cited by 61
Self-citation
Metadata
- Authors
- Hu, G., Ou, Q., Si, G., Wu, Y., Wu, J., Dai, Z., Krasnok, A., Mazor, Y., Zhang, Q., Bao, Q., Qiu, C.-W., & Alù, A.
- Venue
- Nature
- Published
- 2020-06-11
- Volume
- 582
- Issue
- 7811
- Pages
- 209-213
- ISSN
- 0028-0836 (ISSN-L)
- 1476-4687
- OpenAlex
- W3034553264
- Cited by
- 720
- References
- 37
- FWCI
- 28.97
- Type
- journal article
- Language
- en
- Open access
- green
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