Suppressed Nonreciprocal Second-Harmonic Generation of Antiferromagnet MnPSe<sub>3</sub> in the MnPSe<sub>3</sub>/Graphene Heterostructure Due to Interfacial Magnon–Plasmon Coupling
Interfacial coupling is one of the keys to manipulating magnetic/nonmagnetic two-dimensional (2D) heterostructures for novel functionalities. The MnPSe<sub>3</sub>/graphene heterostructure is a prospective platform for quantum information and metrology. However, how graphene affects MnPSe<sub>3</sub> through interfacial coupling is still poorly understood. Herein, second-harmonic generation (SHG) of antiferromagnet MnPSe<sub>3</sub> in the MnPSe<sub>3</sub>/graphene heterostructure is revealed. Surprisingly, it was found that below <i>T</i><sub>N</sub>, nonreciprocal or c-type SHG of MnPSe<sub>3</sub> disappeared when interfacing with the graphene, suggesting the existence of interfacial couplings and/or interactions. Most interestingly, different from the short-range interfacial proximity interaction, this interfacial interaction could be contactless and long-range and varied from 2D metallic/semiconducting to insulating underlayers. Interfacial magnon-plasmon coupling probably played an important role in suppressing the c-type SHG signals of MnPSe<sub>3</sub> in the MnPSe<sub>3</sub>/graphene heterostructure. This study will improve our understanding of the manipulation of nonlinear optical properties in 2D heterostructures.
Authors
- Zhigao Sheng (ORCID: https://orcid.org/0000-0003-3382-5968)
- Yuqiang Liu (ORCID: https://orcid.org/0000-0003-3494-6390)
- Linhua Hu (ORCID: https://orcid.org/0000-0002-0513-2999)
- De Hou (ORCID: https://orcid.org/0000-0003-0457-7491)
- Ningfang Wang
- Xiaoping Yang
- Bolin Li (ORCID: https://orcid.org/0000-0002-1109-0430)
- Ziyun Wang (ORCID: https://orcid.org/0000-0002-2817-8367)
- Xintong Hu
- Xiao Chang (ORCID: https://orcid.org/0009-0006-5103-531X)
- Jinsheng Xu (ORCID: https://orcid.org/0000-0001-6453-1853)
Institutions
- University of Science and Technology of China (CN)
- Anhui University (CN)
- Chinese Academy of Sciences (CN)
- Hefei Institutes of Physical Science (CN)
- High Magnetic Field Laboratory (CN)
- Institute of Solid State Physics (CN)
Publication Details
- Journal
- Nano Letters
- Published
- 2024-11-13
- DOI
- https://doi.org/10.1021/acs.nanolett.4c04184
- Citations
- 1
- Primary Topic
- 2D Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.12
Funders
- National Natural Science Foundation of China
- Hefei Science Center, Chinese Academy of Sciences
- National Key Research and Development Program of China