The DOI matches its Crossref record; 32 of the 32 references it cites were found in a registry or an index.
Extraordinary Second Harmonic Generation in Tungsten Disulfide Monolayers
Open accessAbstract
We investigate Second Harmonic Generation (SHG) in monolayer WS₂ both deposited on a SiO₂/Si substrate or suspended using transmission electron microscopy grids. We find unusually large second order nonlinear susceptibility, with an estimated value of d(eff) ~ 4.5 nm/V nearly three orders of magnitude larger than other common nonlinear crystals. In order to quantitatively characterize the nonlinear susceptibility of two-dimensional (2D) materials, we have developed a formalism to model SHG based on the Green's function with a 2D nonlinear sheet source. In addition, polarized SHG is demonstrated as a useful method to probe the structural symmetry and crystal orientation of 2D materials. To understand the large second order nonlinear susceptibility of monolayer WS₂, density functional theory based calculation is performed. Our analysis suggests the origin of the large nonlinear susceptibility in resonance enhancement and a large joint density of states, and yields an estimate of the nonlinear susceptibility value d(eff) = 0.77 nm/V for monolayer WS₂, which shows good order-of-magnitude agreement with the experimental result.
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Cites
Electric Field Effect in Atomically Thin Carbon Films
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Electronics and optoelectronics of two-dimensional transition metal dichalcogenides
Wang, Q. H., Kalantar-Zadeh, K., Kis, A., Coleman, J. N., & Strano, M. S. (2012) · Nature Nanotechnology · doi:10.1038/nnano.2012.193 · Cited by 16,374
Atomically Thin MoS 2 : A New Direct-Gap Semiconductor
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Two-dimensional atomic crystals
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Emerging Photoluminescence in Monolayer MoS2
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Iron-Based Layered Superconductor La[O1-xFx]FeAs (x = 0.05−0.12) with Tc = 26 K
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Photonics of time-varying media
Galiffi, E., Tirole, R., Yin, S., Li, H., Vezzoli, S., Huidobro, P. A., Silveirinha, M. G., Sapienza, R., Alù, A., & Pendry, J. B. (2022) · Advanced Photonics · doi:10.1117/1.ap.4.1.014002 · Cited by 591
Electrical control of second-harmonic generation in a WSe2 monolayer transistor
Seyler, K. L., Schaibley, J. R., Gong, P., Rivera, P., Jones, A. M., Wu, S., Yan, J., Mandrus, D. G., Yao, W., & Xu, X. (2015) · Nature Nanotechnology · doi:10.1038/nnano.2015.73 · Cited by 572
Metadata
- Authors
- Janisch, C., Wang, Y., Ma, D., Mehta, N., Elías, A. L., Perea-López, N., Terrones, M., Crespi, V., & Liu, Z.
- Venue
- Scientific Reports
- Published
- 2014-07-02
- Volume
- 4
- Issue
- 1
- Pages
- 5530-5530
- ISSN
- 2045-2322 (ISSN-L)
- OpenAlex
- W2082372970
- Cited by
- 351
- References
- 32
- FWCI
- 11.76
- Type
- journal article
- Language
- en
- Open access
- gold
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- Janisch, C., Wang, Y., Ma, D., Mehta, N., Elías, A. L., Perea-López, N., Terrones, M., Crespi, V., & Liu, Z. (2014). Extraordinary Second Harmonic Generation in Tungsten Disulfide Monolayers. Scientific Reports. https://doi.org/10.1038/srep05530
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