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Intrinsic Magnetism of Grain Boundaries in Two-Dimensional Metal Dichalcogenides
Open accessAbstract
Grain boundaries (GBs) are structural imperfections that typically degrade the performance of materials. Here we show that dislocations and GBs in two-dimensional (2D) metal dichalcogenides MX2 (M = Mo, W; X = S, Se) can actually improve the material by giving it a qualitatively new physical property: magnetism. The dislocations studied all display a substantial magnetic moment of ∼1 Bohr magneton. In contrast, dislocations in other well-studied 2D materials are typically nonmagnetic. GBs composed of pentagon-heptagon pairs interact ferromagnetically and transition from semiconductor to half-metal or metal as a function of tilt angle and/or doping level. When the tilt angle exceeds 47°, the structural energetics favor square-octagon pairs and the GB becomes an antiferromagnetic semiconductor. These exceptional magnetic properties arise from interplay of dislocation-induced localized states, doping, and locally unbalanced stoichiometry. Purposeful engineering of topological GBs may be able to convert MX2 into a promising 2D magnetic semiconductor.
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Cites
The chemistry of two-dimensional layered transition metal dichalcogenide nanosheets
Chhowalla, M., Shin, H. S., Eda, G., Li, L.-J., Loh, K. P., & Zhang, H. (2013) · Nature Chemistry · doi:10.1038/nchem.1589 · Cited by 10,034
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Cai, L., He, J., Liu, Q., Yao, T., Chen, L., Yan, W., Hu, F., Jiang, Y., Zhao, Y., Hu, T., et al. (2015) · Journal of the American Chemical Society · doi:10.1021/ja5120908 · Cited by 834
Polycrystalline graphene and other two-dimensional materials
Yazyev, O. V., & Chen, Y. P. (2014) · Nature Nanotechnology · doi:10.1038/nnano.2014.166 · Cited by 502
Strong anisotropy and magnetostriction in the two-dimensional Stoner ferromagnetFe3GeTe2
Zhuang, H. L., Kent, P. R. C., & Hennig, R. G. (2016) · Physical Review B · doi:10.1103/physrevb.93.134407 · Cited by 432
Samadi, M., Sarikhani, N., Zirak, M., Zhang, H., Zhang, H.-L., & Moshfegh, A. Z. (2018) · Nanoscale Horizons · doi:10.1039/c7nh00137a · Cited by 408
Synthesis, stabilization and applications of 2-dimensional 1T metallic MoS 2
Shi, S., Sun, Z., & Hu, Y. H. (2018) · Journal of Materials Chemistry A · doi:10.1039/c8ta08152b · Cited by 374
Ultrathin nanosheets of CrSiTe3: a semiconducting two-dimensional ferromagnetic material
Lin, M.-W., Zhuang, H. L., Yan, J., Ward, T. Z., Puretzky, A. A., Rouleau, C. M., Gai, Z., Liang, L., Meunier, V., Sumpter, B. G., et al. (2016) · Journal of Materials Chemistry C · doi:10.1039/c5tc03463a · Cited by 287
Deshmukh, K., Kovářík, T., & Khadheer Pasha, S. K. (2020) · Coordination Chemistry Reviews · doi:10.1016/j.ccr.2020.213514 · Cited by 282
Charge density wave order in 1D mirror twin boundaries of single-layer MoSe2
Barja, S., Wickenburg, S., Liu, Z.-F., Zhang, Y., Ryu, H., Ugeda, M. M., Hussain, Z., Shen, Z.-X., Mo, S.-K., Wong, E., et al. (2016) · Nature Physics · doi:10.1038/nphys3730 · Cited by 265
Metadata
- Authors
- Zhang, Z., Zou, X., Crespi, V. H., & Yakobson, B. I.
- Venue
- ACS Nano
- Publisher
- American Chemical Society (ACS)
- Published
- 2013-11-19
- Volume
- 7
- Issue
- 12
- Pages
- 10475-10481
- ISSN
- 1936-0851 (ISSN-L)
- 1936-086X
- OpenAlex
- W2532066020
- Cited by
- 275
- References
- 1
- FWCI
- 8.29
- Type
- journal article
- Language
- en
- Open access
- green
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