Harnessing Graphene Plasmons by Accessing the Retardation Regime
Plasmons in graphene are highly tunable, mainly by leveraging the carrier density and Drude scattering. Here, we introduce another scheme, i.e., accessing the retardation regime (originated from the finite speed of light), to engineer the lifetime and dispersion of plasmons in graphene in the terahertz regime. We find that the retardation regime can be approached by reducing plasmon momentum in artificially stacked multilayer graphene systems with large Drude weight, and this can significantly increase the plasmon lifetime. In addition, an explicit theoretical model along with finite-element simulation was given, consistent with the experimental findings. Our work opens another avenue to manipulate terahertz plasmons in graphene.
Authors
- Xuesong Li (ORCID: https://orcid.org/0000-0002-1157-0266)
- Lei Zhou (ORCID: https://orcid.org/0000-0002-6296-8768)
- Shunjia Wang
- Hugen Yan (ORCID: https://orcid.org/0000-0001-8423-6069)
- Zhensheng Tao (ORCID: https://orcid.org/0000-0002-8727-3719)
- Chaoyu Song (ORCID: https://orcid.org/0000-0001-9910-9513)
- Jiajun Wang (ORCID: https://orcid.org/0000-0002-7554-370X)
- Lei Shi (ORCID: https://orcid.org/0000-0001-7119-3207)
- Jiasheng Zhang
- Qiaoxia Xing
- Tuoyu Zhao
- Chong Wang (ORCID: https://orcid.org/0000-0001-5331-7165)
- Shenyang Huang (ORCID: https://orcid.org/0000-0001-8788-8652)
- Yuangang Xie
- Wu Shi
- Junwei Ma (ORCID: https://orcid.org/0000-0002-6760-4672)
- Quan Wan
Institutions
- Beijing Institute of Technology (CN)
- Mongolian University of Science and Technology (MN)
- University of Electronic Science and Technology of China (CN)
- Fudan University (CN)
- Inner Mongolia University (CN)
- Quantum Devices (United States) (US)
- Institute for Advanced Study (DE)
- Shenzhen Institutes of Advanced Technology (CN)
- State Key Laboratory of Surface Physics
Publication Details
- Journal
- ACS Applied Materials & Interfaces
- Published
- 2025-05-23
- DOI
- https://doi.org/10.1021/acsami.5c02112
- Citations
- 1
- Primary Topic
- Plasmonic and Surface Plasmon Research
- Type
- article
- Field-Weighted Citation Impact
- 0.67