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

doi:10.1021/acsami.5c02112

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^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Journal	ACS Applied Materials and Interfaces
DOIs	https://doi.org/10.1021/acsami.5c02112
Publication status	Accepted/In press - 2025
Externally published	Yes

Keywords

Drude weight
graphene
plasmon
retardation effects
terahertz

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10.1021/acsami.5c02112

Cite this

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title = "Harnessing Graphene Plasmons by Accessing the Retardation Regime",

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.",

keywords = "Drude weight, graphene, plasmon, retardation effects, terahertz",

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

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year = "2025",

doi = "10.1021/acsami.5c02112",

language = "English",

journal = "ACS Applied Materials and Interfaces",

issn = "1944-8244",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Harnessing Graphene Plasmons by Accessing the Retardation Regime

AU - Zhang, Jiasheng

AU - Xing, Qiaoxia

AU - Zhao, Tuoyu

AU - Wang, Shunjia

AU - Ma, Junwei

AU - Wang, Chong

AU - Wang, Jiajun

AU - Xie, Yuangang

AU - Huang, Shenyang

AU - Song, Chaoyu

AU - Wan, Quan

AU - Shi, Lei

AU - Tao, Zhensheng

AU - Shi, Wu

AU - Li, Xuesong

AU - Zhou, Lei

AU - Yan, Hugen

PY - 2025

Y1 - 2025

N2 - 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.

AB - 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.

KW - Drude weight

KW - graphene

KW - plasmon

KW - retardation effects

KW - terahertz

UR - http://www.scopus.com/inward/record.url?scp=105005841413&partnerID=8YFLogxK

U2 - 10.1021/acsami.5c02112

DO - 10.1021/acsami.5c02112

M3 - Article

AN - SCOPUS:105005841413

SN - 1944-8244

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

ER -

Harnessing Graphene Plasmons by Accessing the Retardation Regime

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