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Valley-Hall Topological Transport in Graphene Plasmonic Crystal Waveguides

You, JW; Wang, Y; Panoiu, NC; (2020) Valley-Hall Topological Transport in Graphene Plasmonic Crystal Waveguides. In: 2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials). (pp. pp. 343-345). IEEE: New York City, NY, USA. Green open access

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Abstract

Due to immunity to disorder and structural imperfections, topologically-protected plasmonic modes have recently attracted increasing attention. Here, we introduce two different mechanisms to construct valley-Hall domain-wall interface waveguides in graphene plasmonic crystal to mimic the quantum valley-Hall effect. In the first case, we break the in-plane spatial inversion symmetry of a single-layer graphene plasmonic crystal waveguide to achieve valley-Hall topological characteristics, whereas in the second case, we break the out-of-plane spatial inversion symmetry of a bi-layer graphene plasmonic crystal waveguide to implement the analog quantum valley-Hall effect. A molecular sensor based on this valley-Hall topological transport phenomenon is also be presented.

Type: Proceedings paper
Title: Valley-Hall Topological Transport in Graphene Plasmonic Crystal Waveguides
Event: 2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)
ISBN-13: 9781728161044
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/Metamaterials49557.2020.9285067
Publisher version: http://dx.doi.org/10.1109/Metamaterials49557.2020....
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10120742
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