%0 Journal Article %1 seratidebrito2023charge %A Serati de Brito, Caique %A Faria Junior, Paulo E. %A Ghiasi, Talieh S. %A Ingla-Aynés, Josep %A Rabahi, César Ricardo %A Cavalini, Camila %A Dirnberger, Florian %A Mañas-Valero, Samuel %A Watanabe, Kenji %A Taniguchi, Takashi %A Zollner, Klaus %A Fabian, Jaroslav %A Schüller, Christian %A van der Zant, Herre S. J. %A Gobato, Yara Galvão %B Nano Letters %D 2023 %I American Chemical Society %J Nano Lett. %K a b %N 23 %P 11073--11081 %R 10.1021/acs.nanolett.3c03431 %T Charge transfer and asymmetric coupling of MoSe$_2$ valleys to the magnetic order of CrSBr %U https://doi.org/10.1021/acs.nanolett.3c03431 %V 23 %X 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.

@article{seratidebrito2023charge, 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.}, added-at = {2024-01-02T11:31:55.000+0100}, author = {Serati de Brito, Caique and Faria Junior, Paulo E. and Ghiasi, Talieh S. and Ingla-Aynés, Josep and Rabahi, César Ricardo and Cavalini, Camila and Dirnberger, Florian and Mañas-Valero, Samuel and Watanabe, Kenji and Taniguchi, Takashi and Zollner, Klaus and Fabian, Jaroslav and Schüller, Christian and van der Zant, Herre S. J. and Gobato, Yara Galvão}, biburl = {https://www.bibsonomy.org/bibtex/27f645889732ddac8af01b92f722991cf/ctqmat}, booktitle = {Nano Letters}, day = 29, doi = {10.1021/acs.nanolett.3c03431}, interhash = {2f4f6b4bb7d9ff5c7be359ea36c229b6}, intrahash = {7f645889732ddac8af01b92f722991cf}, issn = {15306984}, journal = {Nano Lett.}, keywords = {a b}, month = {11}, number = 23, pages = {11073--11081}, publisher = {American Chemical Society}, timestamp = {2024-01-02T11:58:07.000+0100}, title = {Charge transfer and asymmetric coupling of MoSe$_{\mathbf{2}}$ valleys to the magnetic order of CrSBr}, undefined = {doi: 10.1021/acs.nanolett.3c03431}, url = {https://doi.org/10.1021/acs.nanolett.3c03431}, volume = 23, year = 2023 }