Dawood, A, Park, SJ orcid.org/0000-0001-8606-191X, Parker-Jervis, R et al. (6 more authors) (2022) Effect of mesa geometry on low-terahertz frequency range plasmons in two-dimensional electron systems. Journal of Physics D: Applied Physics, 55 (1). 015103. ISSN 0022-3727
Abstract
We demonstrate engineering of the low-terahertz range plasmonic spectra of two-dimensional electron systems by modifying their geometry. Specifically, we have modelled, fabricated, and measured two devices for comparison. The first device has a rectangular channel, while the second is trapezoidal, designed to support a richer plasmonic spectrum by causing variation in the device width along the direction of plasmon propagation. We show that while plasmon resonant frequencies and field distributions in the rectangular device can largely be described by a simple one-dimensional analytical model, the field distributions modelled in the trapezoidal device shows a more complex pattern with significant variation along the length of the channel, so requiring a two-dimensional treatment. The results illustrate the potential of modifying the channel geometry to obtain different spectra in experiments, with potential applications in the design of novel terahertz-range devices, such as plasmon-based sources and detectors.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2021 IOP Publishing Ltd. This is an author-created, un-copyedited version of an article published in Journal of Physics D: Applied Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.1088/1361-6463/ac2401 |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Pollard Institute (Leeds) |
Funding Information: | Funder Grant number EPSRC (Engineering and Physical Sciences Research Council) EP/R00501X/1 EPSRC (Engineering and Physical Sciences Research Council) EP/P021859/1 EPSRC (Engineering and Physical Sciences Research Council) EP/V004743/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 16 Sep 2021 12:36 |
Last Modified: | 07 May 2024 14:01 |
Status: | Published |
Publisher: | IOP Publishing |
Identification Number: | 10.1088/1361-6463/ac2401 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:177759 |