The DOI matches its Crossref record; 34 of the 34 references it cites were found in a registry or an index.
Giant valley splitting in monolayer WS2 by magnetic proximity effect
Open accessAbstract
Lifting the valley degeneracy of monolayer transition metal dichalcogenides (TMDs) would allow versatile control of the valley degree of freedom. We report a giant valley exciton splitting of 16 meV/T for monolayer WS 2, using the proximity effect from an EuS substrate, which is enhanced by nearly two orders of magnitude from that obtained by an external magnetic field. More interestingly, a sign reversal of the valley splitting is observed as compared to that of WSe 2 on EuS. Using first principles calculations, we investigate the complex behavior of exchange interactions between TMDs and EuS. The sign reversal is attributed to competing ferromagnetic (FM) and antiferromagnetic (AFM) exchange interactions for Eu- and S- terminated EuS surface sites. They act differently on the conduction and valence bands of WS 2 compared to WSe 2. Tuning the sign and magnitude of the valley exciton splitting offers opportunities for control of valley pseudospin for quantum information processing.
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Cites
Layer-dependent ferromagnetism in a van der Waals crystal down to the monolayer limit
Huang, B., Clark, G., Navarro-Moratalla, E., Klein, D. R., Cheng, R., Seyler, K. L., Zhong, D., Schmidgall, E., McGuire, M. A., Cobden, D. H., et al. (2017) · Nature · doi:10.1038/nature22391 · Cited by 5,926
Coupled Spin and Valley Physics in Monolayers ofMoS2and Other Group-VI Dichalcogenides
Xiao, D., Liu, G.-B., Feng, W., Xu, X., & Yao, W. (2012) · Physical Review Letters · doi:10.1103/physrevlett.108.196802 · Cited by 5,152
Discovery of intrinsic ferromagnetism in two-dimensional van der Waals crystals
Gong, C., Li, L., Li, Z., Ji, H., Stern, A., Xia, Y., Cao, T., Bao, W., Wang, C., Wang, Y., et al. (2017) · Nature · doi:10.1038/nature22060 · Cited by 5,050
Superconducting Proximity Effect and Majorana Fermions at the Surface of a Topological Insulator
Fu, L., & Kane, C. L. (2008) · Physical Review Letters · doi:10.1103/physrevlett.100.096407 · Cited by 4,868
Control of valley polarization in monolayer MoS2 by optical helicity
Mak, K. F., He, K., Shan, J., & Heinz, T. F. (2012) · Nature Nanotechnology · doi:10.1038/nnano.2012.96 · Cited by 4,034
Valley polarization in MoS2 monolayers by optical pumping
Zeng, H., Dai, J., Yao, W., Xiao, D., & Cui, X. (2012) · Nature Nanotechnology · doi:10.1038/nnano.2012.95 · Cited by 3,693
Self-citationSchaibley, J. R., Yu, H., Clark, G., Rivera, P., Ross, J. S., Seyler, K. L., Yao, W., & Xu, X. (2016) · Nature Reviews Materials · doi:10.1038/natrevmats.2016.55 · Cited by 2,652
Gate-tunable room-temperature ferromagnetism in two-dimensional Fe3GeTe2
Deng, Y., Yu, Y., Song, Y., Zhang, J., Wang, N. Z., Sun, Z., Yi, Y., Wu, Y. Z., Wu, S., Zhu, J., et al. (2018) · Nature · doi:10.1038/s41586-018-0626-9 · Cited by 2,619
Valley-selective circular dichroism of monolayer molybdenum disulphide
Cao, T., Wang, G., Han, W., Ye, H., Zhu, C., Shi, J., Niu, Q., Tan, P., Wang, E., Liu, B., et al. (2012) · Nature Communications · doi:10.1038/ncomms1882 · Cited by 2,605
Zhu, Z. Y., Cheng, Y. C., & Schwingenschlögl, U. (2011) · Physical Review B · doi:10.1103/physrevb.84.153402 · Cited by 1,675
Cited by
Emergent phenomena and proximity effects in two-dimensional magnets and heterostructures
Huang, B., McGuire, M. A., May, A. F., Xiao, D., Jarillo-Herrero, P., & Xu, X. (2020) · Nature Materials · doi:10.1038/s41563-020-0791-8 · Cited by 396
Metadata
- Authors
- Norden, T., Zhao, C., Zhang, P., Sabirianov, R., Petrou, A., & Zeng, H.
- Venue
- Nature Communications
- Published
- 2019-09-13
- Volume
- 10
- Issue
- 1
- Pages
- 4163-4163
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W2913250816
- Cited by
- 283
- References
- 34
- FWCI
- 9.81
- Type
- journal article
- Language
- en
- Open access
- gold
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- Norden, T., Zhao, C., Zhang, P., Sabirianov, R., Petrou, A., & Zeng, H. (2019). Giant valley splitting in monolayer WS2 by magnetic proximity effect. Nature Communications. https://doi.org/10.1038/s41467-019-11966-4
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