Bergmann-Iwe, Annika and Deb, Swarup and Zollner, Klaus and Schneidt, Veronika and Hemaid, Mustafa and Watanabe, Kenji and Taniguchi, Takashi and Schwartz, Rico and Fabian, Jaroslav and Korn, Tobias (2025) Effect of spin-dependent tunneling in a MoSe2/Cr2Ge2Te6 van der Waals heterostructure on exciton and trion emission. PHYSICAL REVIEW APPLIED, 24 (3): 034008. ISSN 2331-7019,
Full text not available from this repository. (Request a copy)Abstract
We study van der Waals heterostructures consisting of monolayer MoSe2 and few-layer Cr2Ge2Te6 fully encapsulated in hexagonal boron nitride using low-temperature photoluminescence and polar magnetooptical Kerr-effect measurements. Photoluminescence characterization reveals a partial quenching and a change of the exciton-trion emission ratio in the heterostructure as compared to the isolated MoSe2 monolayer. Under circularly polarized excitation, we find that the exciton-trion emission ratio depends on the relative orientation of excitation helicity and Cr2Ge2Te6 magnetization, even though the photoluminescence emission itself is unpolarized. This observation hints at an ultrafast, spin-dependent interlayer charge transfer that competes with exciton and trion formation and recombination.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | VALLEY POLARIZATION; MONOLAYER; FERROMAGNETISM; CRYSTALS; LAYER; WSE2; MOS2 |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 15 Jul 2026 06:54 |
| Last Modified: | 15 Jul 2026 06:54 |
| URI: | https://pred.uni-regensburg.de/id/eprint/67210 |
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