Transverse-electric surface plasmon polaritons in periodically modulated graphene

Ahmad, Zeeshan, Oh, Sang Soon ORCID: https://orcid.org/0000-0003-3093-7016 and Muljarov, Egor ORCID: https://orcid.org/0000-0002-2878-4148 2024. Transverse-electric surface plasmon polaritons in periodically modulated graphene. Physical Review Research

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Abstract

Transverse-electric (TE) surface plasmon polaritons are unique eigenmodes of a homogeneous graphene layer that are tunable with the chemical potential and temperature. However, as their dispersion curve spectrally lies just below the light line, they cannot be resonantly excited by an externally incident wave. Here, we propose a way of exciting the TE modes and tuning their peaks in the transmission by introducing a one-dimensional graphene grating. Using the scattering-matrix formalism, we show that periodic modulations of graphene make the transmission more pronounced, potentially allowing for experimental observation of the TE modes. Furthermore, we propose the use of turbostratic graphene to enhance the role of the surface plasmon polaritons in optical spectra.

Item Type:	Article
Status:	In Press
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics
Publisher:	American Physical Society
ISSN:	2643-1564
Date of First Compliant Deposit:	2 March 2024
Date of Acceptance:	1 March 2024
Last Modified:	21 Mar 2024 16:30
URI:	https://orca.cardiff.ac.uk/id/eprint/166776

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