de Brito, Caique Serati and Faria Junior, Paulo E. and Ghiasi, Talieh S. and Ingla-Aynes, Josep and Rabahi, Cesar Ricardo and Cavalini, Camila and Dirnberger, Florian and Manas-Valero, Samuel and Watanabe, Kenji and Taniguchi, Takashi and Zollner, Klaus and Fabian, Jaroslav and Schueller, Christian and van der Zant, Herre S. J. and Gobato, Yara Galvao (2023) Charge Transfer and Asymmetric Coupling of MoSe2 Valleys to the Magnetic Order of CrSBr. NANO LETTERS, 23 (23). pp. 11073-11081. ISSN 1530-6984, 1530-6992
Full text not available from this repository. (Request a copy)Abstract
van der Waals heterostructures composed of two-dimensional (2D) transition metal dichalcogenides and vdW magnetic materials offer an intriguing platform to functionalize valley and excitonic properties in nonmagnetic TMDs. Here, we report magneto photoluminescence (PL) investigations of monolayer (ML) MoSe2 on the layered A-type antiferromagnetic (AFM) semiconductor CrSBr under different magnetic field orientations. Our results reveal a clear influence of the CrSBr magnetic order on the optical properties of MoSe2, such as an anomalous linear-polarization dependence, changes of the exciton/trion energies, a magnetic-field dependence of the PL intensities, and a valley g-factor with signatures of an asymmetric magnetic proximity interaction. Furthermore, first-principles calculations suggest that MoSe2/CrSBr forms a broken-gap (type-III) band alignment, facilitating charge transfer processes. The work establishes that antiferromagnetic-nonmagnetic interfaces can be used to control the valley and excitonic properties of TMDs, relevant for the development of opto-spintronics devices.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | EXCITONS; LAYER; POLARIZATION; WSE2; transition metal dichalcogenides; two-dimensional magnets; van der Waals heterostructures; proximity effects; magneto-optics |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian Physics > Institute of Experimental and Applied Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 13 Mar 2024 16:06 |
| Last Modified: | 13 Mar 2024 16:08 |
| URI: | https://pred.uni-regensburg.de/id/eprint/60054 |
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