| Full text | |
| Author(s): Show less - |
Beer, Andreas
;
Zollner, Klaus
;
Serati de Brito, Caique
;
Faria Junior, Paulo E.
;
Parzefall, Philipp
;
Ghiasi, Talieh S.
;
Ingla-Aynes, Josep
;
Manas-Valero, Samuel
;
Boix-Constant, Carla
;
Watanabe, Kenji
;
Taniguchi, Takashi
;
Fabian, Jaroslav
;
van der Zant, Herre S. J.
;
Galvao Gobato, Yara
;
Schueller, Christian
Total Authors: 15
|
| Document type: | Journal article |
| Source: | ACS NANO; v. 18, n. 45, p. 11-pg., 2024-10-28. |
| Abstract | |
Heterostructures, composed of semiconducting transition-metal dichalcogenides (TMDC) and magnetic van-der-Waals materials, offer exciting prospects for the manipulation of the TMDC valley properties via proximity interaction with the magnetic material. We show that the atomic proximity of monolayer MoSe2 and the antiferromagnetic van-der-Waals crystal CrSBr leads to an unexpected breaking of time-reversal symmetry, with originally perpendicular spin directions in both materials. The observed effect can be traced back to a proximity-induced exchange interaction via first-principles calculations. The resulting spin splitting in MoSe2 is determined experimentally and theoretically to be on the order of a few meV. Moreover, we find a more than 2 orders of magnitude longer valley lifetime of spin-polarized charge carriers in the heterostructure, as compared to monolayer MoSe2/SiO2, driven by a Mott transition in the type-III band-aligned heterostructure. (AU) | |
| FAPESP's process: | 22/00419-0 - Van der Waals Heterostructures for Spintronics |
| Grantee: | Yara Galvão Gobato |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 22/08329-0 - Effect of Moiré pattern on physical properties of twisted van der Waals heterostructures |
| Grantee: | Yara Galvão Gobato |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 22/10340-2 - Scientific MUE: acquisition of a high temporal, spatial and spectral resolution fluorescence system operating over a wide temperature range |
| Grantee: | Gilmar Eugenio Marques |
| Support Opportunities: | Research Infrastructure Program - Scientific |
| FAPESP's process: | 23/01313-4 - Optical properties of van der Waals heterostructures |
| Grantee: | Yara Galvão Gobato |
| Support Opportunities: | Regular Research Grants |