Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session M56: Collective Modes and Optical Nonlinearities in Graphene
8:00 AM–11:00 AM,
Wednesday, March 16, 2022
Room: Hyatt Regency Hotel -Burnham
Sponsoring
Unit:
DCMP
Chair: Ken Burch, Boston College
Abstract: M56.00007 : Plasmonics in a graphene cavity
9:12 AM–9:24 AM
Presenter:
Johannes Geurs
(Columbia University)
Authors:
Johannes Geurs
(Columbia University)
Yinan Dong
(Columbia University)
Dmitri N Basov
(Columbia University)
Cory R Dean
(Columbia Univ)
In this study, we investigate SPPs in graphene cavities. With a patterned graphite gate underneath the graphene, we can electrostatically define a cavity, and control the carrier density inside and outside the cavity. Lateral dimensions down to hundreds of nanometers are possible, comparable with the wavelength of the SPPs launched by the pn junctions bounding the cavity. We present the effects of confinement on the SPP dispersion, and its dependence on carrier densities on either side of the cavity edge.
References
[1] D.N. Basov, A. Asenjo-Garcia, P.J. Schuck, X.Y. Zhu, and Angel Rubio. Polaritons Panorama. Nanophotonics 10, 549 (2021).
[2] Y. Dong, L. Xiong, I. Y. Phinney et al. Fizeau drag in graphene plasmonics. Nature 594, 513–516 (2021).
[3] D. N. Basov, M. M. Fogler, and F. J. Garcia de Abajo. Polaritons in van der Waals materials. Science 354, 195 (2016).
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