Smirnov, Dmitry S. and Holler, Johannes and Kempf, Michael and Zipfel, Jonas and Nagler, Philipp and Ballottin, Mariana and Mitioglu, Anatolie A. and Chernikov, Alexey and Christianen, Peter C. M. and Schueller, Christian and Korn, Tobias (2022) Valley-magnetophonon resonance for interlayer excitons. 2D MATERIALS, 9 (4): 045016. ISSN 2053-1583,
Full text not available from this repository. (Request a copy)Abstract
Heterobilayers consisting of MoSe2 and WSe2 monolayers can host optically bright interlayer excitons with intriguing properties such as ultralong lifetimes and pronounced circular polarization of their photoluminescence due to valley polarization, which can be induced by circularly polarized excitation or applied magnetic fields. Here, we report on the observation of an intrinsic valley-magnetophonon resonance for localized interlayer excitons promoted by invervalley hole scattering. It leads to a resonant increase of the photoluminescence polarization degree at the same field of 24.2 Tesla for H-type and R-type stacking configurations despite their vastly different excitonic energy splittings. As a microscopic mechanism of the hole intervalley scattering we identify the scattering with chiral TA phonons of MoSe2 between excitonic states mixed by the long-range electron hole exchange interaction.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MONOLAYER; COMPLEXES; SEMICONDUCTORS; CONDUCTIVITY; BIEXCITON; SPIN; excitons; transition metal dichalcogenide; heterobilayer; magnetophonon resonance; photoluminescence; intervalley scattering |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 01 Feb 2024 13:56 |
| Last Modified: | 01 Feb 2024 13:56 |
| URI: | https://pred.uni-regensburg.de/id/eprint/58366 |
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