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Probing Symmetry Properties of Few-Layer MoS2 and h-BN by Optical Second-Harmonic Generation
Abstract
We have measured optical second-harmonic generation (SHG) from atomically thin samples of MoS2 and h-BN with one to five layers. We observe strong SHG from materials with odd layer thickness, for which a noncentrosymmetric structure is expected, while the centrosymmetric materials with even layer thickness do not yield appreciable SHG. SHG for materials with odd layer thickness was measured as a function of crystal orientation. This dependence reveals the rotational symmetry of the lattice and is shown to provide a purely optical method of determining the orientation of crystallographic axes. We report values for the nonlinearity of monolayers and odd-layers of MoS2 and h-BN and compare the variation as a function of layer thickness with a model that accounts for wave propagation effects.
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Two-dimensional atomic crystals
Novoselov, K. S., Jiang, D., Schedin, F., Booth, T. J., Khotkevich, V. V., Morozov, S. V., & Geim, A. K. (2005) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0502848102 · Cited by 11,788
Biased Bilayer Graphene: Semiconductor with a Gap Tunable by the Electric Field Effect
Castro, E. V., Novoselov, K. S., Morozov, S. V., Peres, N. M. R., dos Santos, J. M. B. L., Nilsson, J., Guinea, F., Geim, A. K., & Neto, A. H. C. (2007) · Physical Review Letters · doi:10.1103/physrevlett.99.216802 · Cited by 2,033
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Photonics 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
Self-citationPiezoelectricity of single-atomic-layer MoS2 for energy conversion and piezotronics
Wu, W., Wang, L., Li, Y., Zhang, F., Lin, L., Niu, S., Chenet, D., Zhang, X., Hao, Y., Heinz, T. F., et al. (2014) · Nature · doi:10.1038/nature13792 · Cited by 2,287
Self-citationOut-of-Plane Piezoelectricity and Ferroelectricity in Layered α-In2Se3 Nanoflakes
Zhou, Y., Wu, D., Zhu, Y., Cho, Y., He, Q., Yang, X., Herrera, K., Chu, Z., Han, Y., Downer, M. C., et al. (2017) · Nano Letters · doi:10.1021/acs.nanolett.7b02198 · Cited by 936
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
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
Metadata
- Authors
- Li, Y., Rao, Y., Mak, K. F., You, Y., Wang, S., Dean, C. R., & Heinz, T. F.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2013-06-17
- Volume
- 13
- Issue
- 7
- Pages
- 3329-3333
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2051200985
- Cited by
- 1,166
- References
- 2
- FWCI
- 26.94
- Type
- journal article
- Language
- en
- Open access
- closed
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- Li, Y., Rao, Y., Mak, K. F., You, Y., Wang, S., Dean, C. R., & Heinz, T. F. (2013). Probing Symmetry Properties of Few-Layer MoS2 and h-BN by Optical Second-Harmonic Generation. Nano Letters. https://doi.org/10.1021/nl401561r
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