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Unidirectional plasmonic edge modes on general two-dimensional materials
Unidirectional plasmonic edge modes on general two-dimensional materials
- Publication Year :
- 2019
- Publisher :
- arXiv, 2019.
-
Abstract
- We investigate the field and spin-momentum coupling of edge plasmons hosted by general two-dimensional materials and identify sweet spots depending on the polarisation plane, ellipticity and the position of an electric dipole relative to the plane and edge. Exciting the dipole at these sweet spots by propagating light leads to uni-directional propagating edge plasmons or edge modes are totally suppressed. We also extent previous approximate treatments [A. Fetter Phys. Rev. B 32, 7676 (1985)] to include anisotropy and hyperbolic systems, elucidating its predictions for the existence of edge modes. A thorough assessment of the approximate description is carried out, comparing its spin-momentum coupling features in the near field with exact results from Wiener-Hopf techniques. Simulations are also performed confirming the overall picture. Our results shed new light on the quest of chiral plasmonics in 2D materials and should be relevant for future experiments.<br />Comment: 11 pages, 6 figures
- Subjects :
- Physics
Field (physics)
Condensed Matter - Mesoscale and Nanoscale Physics
Plane (geometry)
Mechanical Engineering
FOS: Physical sciences
Near and far field
02 engineering and technology
General Chemistry
Edge (geometry)
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Surface plasmon polariton
Computational physics
Dipole
Mechanics of Materials
0103 physical sciences
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
General Materials Science
010306 general physics
0210 nano-technology
Anisotropy
Plasmon
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....d91a93a178a11e5ab2c9d93e687484de
- Full Text :
- https://doi.org/10.48550/arxiv.1904.12741