The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.
Optical signature of symmetry variations and spin-valley coupling in atomically thin tungsten dichalcogenides
Open accessAbstract
We report systematic optical studies of WS2 and WSe2 monolayers and multilayers. The efficiency of second harmonic generation shows a dramatic even-odd oscillation with the number of layers, consistent with the presence (absence) of inversion symmetry in even-layer (odd-layer). Photoluminescence (PL) measurements show the crossover from an indirect band gap semiconductor at multilayers to a direct-gap one at monolayers. A hot luminescence peak (B) is observed at ~0.4 eV above the prominent band edge peak (A) in all samples. The magnitude of A-B splitting is independent of the number of layers and coincides with the spin-valley coupling strength in monolayers. Ab initio calculations show that this thickness independent splitting pattern is a direct consequence of the giant spin-valley coupling which fully suppresses interlayer hopping at valence band edge near K points because of the sign change of the spin-valley coupling from layer to layer in the 2H stacking order.
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Cites
Generalized Gradient Approximation Made Simple
Perdew, J. P., Burke, K., & Ernzerhof, M. (1996) · Physical Review Letters · doi:10.1103/physrevlett.77.3865 · Cited by 215,824
Electric Field Effect in Atomically Thin Carbon Films
Novoselov, K. S., Geim, A. K., Morozov, S. V., Jiang, D., Zhang, Y., Dubonos, S. V., Grigorieva, I. V., & Firsov, A. A. (2004) · Science · doi:10.1126/science.1102896 · Cited by 66,834
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
Cited by
Spin and pseudospins in layered transition metal dichalcogenides
Xu, X., Yao, W., Xiao, D., & Heinz, T. F. (2014) · Nature Physics · doi:10.1038/nphys2942 · Cited by 2,855
Self-citationSecond harmonic microscopy of monolayer MoS2
Kumar, N., Najmaei, S., Cui, Q., Ceballos, F., Ajayan, P. M., Lou, J., & Zhao, H. (2013) · Physical Review B · doi:10.1103/physrevb.87.161403 · Cited by 699
Liu, G.-B., Xiao, D., Yao, Y., Xu, X., & Yao, W. (2015) · Chemical Society Reviews · doi:10.1039/c4cs00301b · Cited by 698
Self-citationSamadi, M., Sarikhani, N., Zirak, M., Zhang, H., Zhang, H.-L., & Moshfegh, A. Z. (2018) · Nanoscale Horizons · doi:10.1039/c7nh00137a · Cited by 408
Nonblinking, Intense Two-Dimensional Light Emitter: Monolayer WS2 Triangles
Peimyoo, N., Shang, J., Cong, C., Shen, X., Wu, X., Yeow, E. K. L., & Yu, T. (2013) · ACS Nano · doi:10.1021/nn4046002 · Cited by 308
Metadata
- Authors
- Zeng, H., Liu, G.-B., Dai, J., Yan, Y., Zhu, B., He, R., Xie, L., Xu, S., Chen, X., Yao, W., & Cui, X.
- Venue
- Scientific Reports
- Published
- 2013-04-11
- Volume
- 3
- Issue
- 1
- Pages
- 1608-1608
- ISSN
- 2045-2322 (ISSN-L)
- OpenAlex
- W2027012071
- Cited by
- 1,064
- References
- 3
- FWCI
- 32.41
- Type
- journal article
- Language
- en
- Open access
- gold
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- Zeng, H., Liu, G.-B., Dai, J., Yan, Y., Zhu, B., He, R., Xie, L., Xu, S., Chen, X., Yao, W., & Cui, X. (2013). Optical signature of symmetry variations and spin-valley coupling in atomically thin tungsten dichalcogenides. Scientific Reports. https://doi.org/10.1038/srep01608
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