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Highly Confined and Tunable Hyperbolic Phonon Polaritons in Van Der Waals Semiconducting Transition Metal Oxides
Open accessAbstract
2D van der Waals (vdW) layered polar crystals sustaining phonon polaritons (PhPs) have opened up new avenues for fundamental research and optoelectronic applications in the mid‐infrared to terahertz ranges. To date, 2D vdW crystals with PhPs are only experimentally demonstrated in hexagonal boron nitride (hBN) slabs. For optoelectronic and active photonic applications, semiconductors with tunable charges, finite conductivity, and moderate bandgaps are preferred. Here, PhPs are demonstrated with low loss and ultrahigh electromagnetic field confinements in semiconducting vdW α‐MoO 3. The α‐MoO 3 supports strong hyperbolic PhPs in the mid‐infrared range, with a damping rate as low as 0.08. The electromagnetic confinements can reach ≈λ 0/120, which can be tailored by altering the thicknesses of the α‐MoO 3 2D flakes. Furthermore, spatial control over the PhPs is achieved with a metal‐ion‐intercalation strategy. The results demonstrate α‐MoO 3 as a new platform for studying hyperbolic PhPs with tunability, which enable switchable mid‐infrared nanophotonic devices.
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Cited by
Photonics with hexagonal boron nitride
Caldwell, J. D., Aharonovich, I., Cassabois, G., Edgar, J. H., Gil, B., & Basov, D. N. (2019) · Nature Reviews Materials · doi:10.1038/s41578-019-0124-1 · Cited by 895
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
A mid-infrared biaxial hyperbolic van der Waals crystal
Zheng, Z., Xu, N., Oscurato, S. L., Tamagnone, M., Sun, F., Jiang, Y., Ke, Y., Chen, J., Huang, W., Wilson, W. L., et al. (2019) · Science Advances · doi:10.1126/sciadv.aav8690 · Cited by 428
Self-citationModern Scattering‐Type Scanning Near‐Field Optical Microscopy for Advanced Material Research
Chen, X., Hu, D., Mescall, R., You, G., Basov, D. N., Dai, Q., & Liu, M. (2019) · Advanced Materials · doi:10.1002/adma.201804774 · Cited by 401
Self-citationInterface 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
Metadata
- Authors
- Zheng, Z., Chen, J., Wang, Y., Wang, X., Chen, X., Liu, P., Xu, J., Xie, W., Chen, H., Deng, S., & Xu, N.
- Venue
- Advanced Materials
- Publisher
- Wiley
- Published
- 2018-02-22
- Volume
- 30
- Issue
- 13
- Pages
- e1705318-e1705318
- ISSN
- 0935-9648 (ISSN-L)
- 1521-4095
- OpenAlex
- W2793040927
- Cited by
- 261
- References
- 0
- FWCI
- 10.85
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- Zheng, Z., Chen, J., Wang, Y., Wang, X., Chen, X., Liu, P., Xu, J., Xie, W., Chen, H., Deng, S., & Xu, N. (2018). Highly Confined and Tunable Hyperbolic Phonon Polaritons in Van Der Waals Semiconducting Transition Metal Oxides. Advanced Materials. https://doi.org/10.1002/adma.201705318
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