journal article·2025-06-04

Harnessing Graphene Plasmons by Accessing the Retardation Regime

Jiasheng Zhang, Qiaoxia Xing, Tuoyu Zhao, Shunjia Wang, Junwei Ma, Chong Wang, Jiajun Wang, Yuangang Xie, Shenyang Huang, Chaoyu Song, Quan Wan, Lei Shi, Zhensheng Tao, Wu Shi, Xuesong Li, Lei Zhou, Hugen Yan

ACS Applied Materials & Interfaces· Volume 17· Issue 22
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Abstract

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.
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Research context

OpenAlex topics: Plasmonic and Surface Plasmon Research · Gold and Silver Nanoparticles Synthesis and Applications · Graphene research and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Surface Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education), Shanghai Key Laboratory of Metasurfaces for Light Manipulation, and Department of Physics

Fudan University

Inner Mongolia Key Laboratory of Microscale Physics and Atom Innovation & School of Physical Science and Technology

Inner Mongolia University

State Key Laboratory of Surface Physics and Institute for Nanoelectronic Devices and Quantum Computing

Zhangjiang Fudan International Innovation Center

Centre for Quantum Physics, Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), School of Physics

Beijing Institute of Technology

Beijing Key Lab of Nanophotonics & Ultrafine Optoelectronic Systems, School of Physics

School of Integrated Circuit Science and Engineering (Exemplary School of Microelectronics)

University of Electronic Science and Technology of China

Shenzhen Institute for Advanced Study

Funding

Natural Science Foundation of Shanghai Municipality · National Key Research and Development Program of China · Science and Technology Foundation of Shenzhen City · Natural Science Foundation of Beijing Municipality · National Natural Science Foundation of China

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