Glazov, M. M. and Dirnberger, Florian and Menon, Vinod M. and Taniguchi, Takashi and Watanabe, Kenji and Bougeard, Dominique and Ziegler, Jonas D. and Chernikov, Alexey (2022) Exciton fine structure splitting and linearly polarized emission in strained transition-metal dichalcogenide monolayers. PHYSICAL REVIEW B, 106 (12): 125303. ISSN 2469-9950, 2469-9969
Full text not available from this repository.Abstract
We study theoretically the effects of an anisotropic elastic strain on the exciton energy spectrum fine structure and optical selection rules in atomically thin crystals based on transition-metal dichalcogenides. The presence of strain breaks the chiral selection rules at the K points of the Brillouin zone and makes optical transitions linearly polarized. The orientation of the induced linear polarization is related to the main axes of the strain tensor. Elastic strain provides an additive contribution to the exciton fine structure splitting, in agreement with experimental evidence obtained from the uniaxially strained WSe2 monolayer. The applied strain also induces momentum-dependent Zeeman splitting. Depending on the strain orientation and magnitude, Dirac points with a linear dispersion can be formed in the exciton energy spectrum. We provide a symmetry analysis of the strain effects and develop a microscopic theory for all relevant strain-induced contributions to the exciton fine structure Hamiltonian.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | EXCHANGE INTERACTION; VALLEY POLARIZATION; SPIN; MOS2; DYNAMICS; HEAVY; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Huber > Group Dominique Bougeard |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 01 Feb 2024 08:08 |
| Last Modified: | 01 Feb 2024 08:08 |
| URI: | https://pred.uni-regensburg.de/id/eprint/58468 |
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