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Exciton band structure of monolayerMoS2
Open accessAbstract
We address the properties of excitons in monolayer ${\mathrm{MoS}}_{2}$ from a theoretical point of view, showing that low-energy excitonic states occur both at the Brillouin-zone center and at the Brillouin-zone corners, that binding energies at the Brillouin-zone center deviate strongly from the ${(n\ensuremath{-}1/2)}^{\ensuremath{-}2}$ pattern of the two-dimensional hydrogenic model, and that the valley-degenerate exciton doublet at the Brillouin-zone center splits at finite momentum into an upper mode with nonanalytic linear dispersion and a lower mode with quadratic dispersion. Although monolayer ${\mathrm{MoS}}_{2}$ is a direct-gap semiconductor when classified by its quasiparticle band structure, it may well be an indirect gap material when classified by its excitation spectra.
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Cites
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
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
Cited by
Excitonic linewidth and coherence lifetime in monolayer transition metal dichalcogenides
Selig, M., Berghäuser, G., Raja, A., Nagler, P., Schüller, C., Heinz, T. F., Korn, T., Chernikov, A., Malic, E., & Knorr, A. (2016) · Nature Communications · doi:10.1038/ncomms13279 · Cited by 537
Light–valley interactions in 2D semiconductors
Mak, K. F., Xiao, D., & Shan, J. (2018) · Nature Photonics · doi:10.1038/s41566-018-0204-6 · Cited by 502
Chiral Phonons at High-Symmetry Points in Monolayer Hexagonal Lattices
Zhang, L., & Niu, Q. (2015) · Physical Review Letters · doi:10.1103/physrevlett.115.115502 · Cited by 441
Hill, H. M., Rigosi, A. F., Roquelet, C., Chernikov, A., Berkelbach, T. C., Reichman, D. R., Hybertsen, M. S., Brus, L. E., & Heinz, T. F. (2015) · Nano Letters · doi:10.1021/nl504868p · Cited by 403
Emerging exciton physics in transition metal dichalcogenide heterobilayers
Regan, E. C., Wang, D., Paik, E. Y., Zeng, Y., Zhang, L., Zhu, J., MacDonald, A. H., Deng, H., & Wang, F. (2022) · Nature Reviews Materials · doi:10.1038/s41578-022-00440-1 · Cited by 323
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Metadata
- Authors
- Wu, F., Qu, F., & MacDonald, A. H.
- Venue
- Physical Review B
- Publisher
- American Physical Society (APS)
- Published
- 2015-02-24
- Volume
- 91
- Issue
- 7
- ISSN
- 1098-0121 (ISSN-L)
- 1550-235X
- OpenAlex
- W2073029842
- Cited by
- 333
- References
- 2
- FWCI
- 14.39
- Type
- journal article
- Language
- en
- Open access
- green
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